Textron Bell 212 Maintenance Manual

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The instructions set forth in this manual, as supplemented or modified by Alert Service Bulletins (ASB) or

other directions issued by Bell Helicopter Textron Inc. and Airworthiness Directives (AD) issued by the

applicable regulatory agencies, shall be strictly followed.

201

BELL ® HELICOPTER TEXTRON INC.

AND BELL HELICOPTER TEXTRON

CANADA LTD.

Export Classification C, ECCN 9E991

MAINTENANCE MANUAL

VOLUME 1

GENERAL INFORMATION

NOTICE

REISSUE — 7 JUNE 1993

REVISION 16 — 15 NOVEMBER 2018

BHT-212-MM-1

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Summary of Contents for Textron Bell 212

Page 1: General Information
NOTICE The instructions set forth in this manual, as supplemented or modified by Alert Service Bulletins (ASB) or other directions issued by Bell Helicopter Textron Inc. and Airworthiness Directives (AD) issued by the applicable regulatory agencies, shall be strictly followed.
Page 2 BHT-212-MM-1 PROPRIETARY RIGHTS NOTICE These data are proprietary to Bell Helicopter Textron Inc. Disclosure, reproduction, or use of these data for any purpose other than helicopter operation or maintenance is forbidden without prior written authorization from Bell Helicopter Textron Inc.
Page 3 BHT-212-MM-1 WARNING THIS MANUAL APPLIES ONLY TO HELICOPTERS AND COMPONENTS MAINTAINED IN ACCORDANCE WITH BELL HELICOPTER TEXTRON (BELL) APPROVED PROCEDURES USING BELL APPROVED PARTS. ALL INSPECTION, REPAIR AND OVERHAUL PROCEDURES PUBLISHED BY BELL, INCLUDING PART RETIREMENT LIFE, ARE BASED SOLELY ON THE USE OF BELL PARTS THAT HAVE BEEN MAINTAINED USING BELL APPROVED DATA.
Page 4 BHT-212-MM-1 CUSTOMER SUPPORT AND SERVICES Flying smart means that no matter where you are, or what time it is, you can make a call and get additional information, clarification, or advice on a technical or operational issue concerning your helicopter or information contained in our Technical Publications. Product Support Engineering (PSE) is just a phone call away and may be contacted as follows: Model 206, 407 or 505...
Page 5 VALUATE OGISTICS UBLICATIONS Have you found something wrong with this manual — an error, an inconsistency, unclear instructions, etc.? Although we strive for accuracy and clarity, we may make errors on occasion. If we do and you discover it, we would appreciate your telling us about it so that we can change whatever is incorrect or unclear.
Page 7 CUSTOMER FEEDBACK Return by fax to Product Support Engineering (450) 433-0272, e-mail to publications@bellflight.com, or mail to the address on the next page. Manual Title: Manual Number (if assigned): Date of Issue: Date of Last Revision: Section, Chapter, Paragraph Affected: Your Feedback: Now Reads: Should Read:...
Page 8 TAPE HERE POSTAGE NECESSARY Product Support Engineering 12,800 rue de l’Avenir Mirabel, Québec, Canada, J7J 1R4 FOLD ON DOTTED LINES AND TAPE Export Classification C, ECCN EAR99 TAPE HERE...
Page 9 Please complete this form and return by mail, e-mail (publications@bellflight.com), or fax (817-280-6466, Attention: CPDC). This will ensure that the new owners/operators receive updates to their Bell Helicopter Textron Technical Manuals and Bulletins. Model of Helicopter Sold or Purchased ___________________________________________...
Page 10 From NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES BUSINESS REPLY MAIL FIRST CLASS PERMIT NO. 1744 FORT WORTH, TEXAS COMMERCIAL PUBLICATION DISTRIBUTION CENTER P.O. BOX 482 FORT WORTH, TEXAS 76101-0482 FOLD ON DOTTED LINES AND TAPE TAPE HERE Export Classification C, ECCN EAR99...
Page 11 BHT-212-MM-1 SPARE PARTS WARRANTY ONE YEAR/1,000 HOURS PRORATED WARRANTY AND REMEDY: Seller warrants each new helicopter part or helicopter part reconditioned by seller to be free from defect in material and workmanship under normal use and service and if installed on Bell model helicopters. Seller’s sole obligation under this warranty is limited to replacement or repair of parts which are determined to Seller’s reasonable satisfaction to have been defective with 1,000 hours of operation or one (1) year after installation, whichever occurs first and reimbursement of reasonable freight charges.
Page 24 BHT-212-MM-1 CHAPTER 5 — INSPECTIONS TABLE OF CONTENTS Paragraph Chapter/Section Page Number Title Number Number INSPECTIONS General ..................5-00-00 Inspection Requirements ............... 5-00-00 Crash Damage................5-00-00 Types of Inspections ..............5-00-00 Definitions ..................5-00-00 Inspection and Overhaul Tolerance ..........5-00-00 SCHEDULED INSPECTIONS Scheduled inspections ..............
Page 25 BHT-212-MM-1 TABLE OF CONTENTS (CONT) Paragraph Chapter/Section Page Number Title Number Number 5-35 Each 300 Hours/3 Months of Driveshaft Operation ....... 5-00-00 5-35A Each 300 Hours/12 Months Inspection of Tail Rotor Control Tube and Bearing .............. 5-00-00 152A 5-36 Main Rotor Grip Ultrasonic Inspection........... 5-00-00 5-37 Each 500 Hours/6 Months of Blade Service ........
Page 26 BHT-212-MM-1 FIGURES Figure Page Number Title Number Fuselage Tailboom Attachment Inspection............Inspection of Beam Caps..................Collective Stick Tube ..................Inspection of Main Rotor Hub Grip Tangs, Barrel and Drag Brace Attachment Lugs ........................Spiral Bevel Gears Serial Numbers ..............Inspection of Spiral Bevel Gear ................5-6A Tail Rotor Blade - Detailed Inspection ..............
Page 28 Lead The Fleet (LTF), or any other special programs and the judgement of Bell Helicopter Textron Either Part A or Part B inspection program may be engineers. They are subject to change only by Bell utilized.
Page 29 BHT-212-MM-1 Component operating time records are necessary for EXTENT THAT THERE IS NO CHANCE components that have scheduled maintenance OF REPAIR OR INSTALLATION ON ANY procedures, which are different from those of the HELICOPTER OR COMPONENT. airframe. It is the owner/operator’s responsibility to keep the Historical Service Records (HSR) for the Make sure all limited life parts that have applicable component and to do the necessary...
Page 30 60 calendar months, whichever comes first. For the common Bell Helicopter Textron approved optional equipment that is integrated into this • Scheduled inspections — Part B consists of the maintenance manual, refer to this chapter for the...
Page 31 Operating time to be recorded may be identified AIRWORTHINESS LIFE (CHAPTER 4). as follows: The Bell Helicopter Textron approved tolerance for – Time in service — Time from the moment a scheduled inspections, special inspections, interim helicopter leaves the surface of the earth until inspections, and overhaul intervals, unless otherwise it touches down at the next point of landing.
Page 32 BHT-212-MM-1 Hourly Example (10% or up to a maximum of 100 hours, whichever is less): 300-HOUR NEXT 300-HOUR MAXIMUM ALLOWED INSPECTION CARRIED INSPECTION INSPECTION TOLERANCE OUT AT: DUE AT: DUE AT: 3400 Hours 10% of 300 hours = 30 hours 3430 Hours 3730 Hours (10% tolerance applied)
Page 33 BHT-212-MM-1 Hourly/Calendar Example (10% or up to a maximum of 100 hours operating time/30 days calendar time, whichever is less): (Cont) 1200-HOUR/ NEXT 1200-HOUR/ 24-MONTH MAXIMUM ALLOWED INSPECTION CARRIED 24-MONTH INSPECTION TOLERANCE OUT AT: INSPECTION DUE AT: DUE AT: 4600 Hours/ 10% of 1200 hours = 120 hours 4700 Hours/April 2, 2012 5900 Hours/...
Page 34 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-7. SCHEDULED INSPECTIONS Part B — Inspect helicopter each 25 hours/30 days, each 300 hours, each 600 hours/12 calendar months, each 3000 hours/5 years. Part A — Inspect helicopter daily, each 100 hours/12 calendar months, each 1000 hours, each 3000 hours/5 years.
Page 36 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER DATE: __________________W.O. ______________________ FACILITY: _________________ _ _________________________ HELICOPTER S/N: __________ _ _________________________ REGISTRY NO.: ____________ _ _________________________ TOTAL TIME:________________________________________ SIGNATURE: _______________ _ _________________________ NOTE For helicopters on the Part A inspection program, accomplish the following checks daily before flight...
Page 37 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Chapter 5 Review Special Inspections and carry out applicable inspections. Examine all inspection windows and sight glasses for cracking, crazing, and discoloration. If any of these conditions are present the part must be removed and replaced prior to returning helicopter for service.
Page 38 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Chapter 26 FIRE EXTINGUISHERS Visually inspect cockpit and cabin portable fire extinguishers and engine compartment fire extinguisher containers for security and condition. Chapter 28 FUEL SYSTEM Visually inspect fuel samples for contamination.
Page 39 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Chapter 32 LANDING GEAR SYSTEM Visually inspect landing gear as follows: a. Forward crosstube assembly and retention caps for condition and security of attachment. b.
Page 40 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Visually inspect avionics/electrical and heater compartment doors for condition and security of attachment. Latches for proper operation. Chapter 53 FUSELAGE — General Visual Inspection Fuselage exterior for condition and damage to protective finish.
Page 41 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Inspect driveshaft and intermediate gearbox covers for damage and security. Chapter 62 MAIN ROTOR BLADES — Detailed Visual Inspection Main rotor blades for condition, damage, security, and cleanliness.
Page 42 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Chapter 63 ENGINE-TO-TRANSMISSION MAIN DRIVESHAFT Visually inspect main driveshaft for condition and security. WARNING CAUSE OF ANY DISCOLORATION SHALL BE DETERMINED AND CORRECTED PRIOR TO NEXT FLIGHT.
Page 43 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Chapter 63 TRANSMISSION — General Visual Inspection External oil filters bypass indication. Proper oil level. Transmission cases for damage, condition, and evidence of leaking.
Page 44 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Chapter 63 and ROTOR BRAKE QUILL AND DISC ASSEMBLY SI 212-6 — Detailed Visual Inspection Rotor brake quill for condition, damage, and leaking. Rotor brake for condition, damage, and leaking.
Page 45 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Flapping bearings and pitch change bearings for excessive looseness and freedom of movement through full range of travel with anti-torque pedals positioned full right and then full left. Tail rotor pitch change links, crosshead, pitch horns, counterweight arms, and links for security, corrosion, and condition.
Page 46 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER WARNING CAUSE OF ANY DISCOLORATION SHALL BE DETERMINED AND CORRECTED PRIOR TO NEXT FLIGHT. Flexible couplings and surrounding areas for grease leakage, damage, corrosion, and evidence of overheat as indicated by TEMP-PLATES or coupling discoloration.
Page 47 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER WARNING CAUSE OF ANY DISCOLORATION SHALL BE DETERMINED AND CORRECTED PRIOR TO NEXT FLIGHT. Input and output quill flexible couplings and surrounding area for grease leakage, damage, corrosion, and evidence of overheat indicated...
Page 48 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER WARNING CAUSE OF ANY DISCOLORATION SHALL BE DETERMINED AND CORRECTED PRIOR TO NEXT FLIGHT. Input quill flexible coupling and surrounding area for grease leakage, damage, corrosion, and evidence of overheat as indicated by TEMP-PLATES or coupling discoloration.
Page 49 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER Proper oil level. Chapter 71 RIGHT POWER SECTION — Detailed Visual Inspection Gas generator case for cracks buckled areas, and hot spots. Oil and fuel hoses and tubes for chafing, leaking, and security.
Page 50 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER ENGINE AIR MANAGEMENT SYSTEM — Detailed Visual Inspection Exhaust ejector and ducts for condition, obstruction, and security. Air intake ducts and plenum for condition, obstruction, and security.
Page 51 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-8. DAILY INSPECTION — PART A (CONT) DATA INITIAL INSPECTION TASK DESCRIPTION REFERENCE MECH OTHER All caution and warning lights for proper operation by using master caution, fire test, and baggage compartment smoke detector press to test functions. Landing/search lights for condition and security.
Page 52 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE For helicopters on the Part A inspection program, accomplish each 100 hours of flight operation or after...
Page 53 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Paragraph 5-57 Overhaul all components which have completed published overhaul periods. Chapter 12 Perform lubrication requirements. NOTE The following step is to be performed every 12 calendar months.
Page 54 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Every sixth 100 hour inspection (600 hours) or 12 months: Weight check crew and passenger cabin portable fire extinguishers. Chapter 96 Functionally check voltage of engine fire extinguishing circuits.
Page 55 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Install hydraulic filter elements. Chapter 63 Install 0 to 500 PSIG (0 to 3447 kPa) gauge in quick disconnect at rotor brake caliper. Slowly pull rotor brake handle through travel.
Page 56 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Torque check ground handling wheel attachment eyebolts on skid tubes 40 to 58 foot-pounds (54 to 79 Nm). Eyebolts that rotate prior to reaching 40 foot-pounds (54 Nm) shall be removed and inspected for evidence of bending.
Page 57 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 TAILBOOM — General Visual Inspection ASB 212-90-63 and Internal and external structure of tailboom for cracks, TB 212-94-147 distortion, corrosion, and security.
Page 58 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Using a periscope or suitable means, inspect inside of longeron paying particular attention to cracking and/or corrosion in area of splice. Report any cracks to Product Support Engineering.
Page 59 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER e. Forward crosstube support structure for working fasteners, cracks, corrosion, and excessive wear. f. Aft crosstube support structure for working fasteners, cracks, corrosion, and excessive wear.
Page 60 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Inspection is not applicable to helicopter S/N 30790 subsequent helicopters modified accordance with TB 212-76-12. Clean area around fuel vent line hole with MEK (C-309) or equivalent and remove finish from beam cap.
Page 61 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 62 MAIN ROTOR HUB — Detailed Visual Inspection Main rotor hub assembly (grips, drag braces, trunnion, pillow blocks, static stops, and mast nut) for condition and security.
Page 62 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Inspect stabilizer bar assembly for condition and security. Pay particular attention to tubes P/N 204-011-328-001 and -011 for cracks. Closely inspect area covering 360°, 1.5 inches (38.1 mm) outboard from vertical bolt.
Page 63 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 64 TAIL ROTOR HUB AND BLADE ASSEMBLY CAUTION COUNTERWEIGHT BELLCRANK RETENTION NUTS P/N MS14145L6 OR ITS EQUIVALENT MS17826-6 ARE DESIGNATED AS ONE TIME USE ONLY.
Page 64 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 65 TAIL ROTOR DRIVESHAFT Hanger assemblies for cracks at mounting ears, corrosion, and security of attachment. Hanger supports for condition and security of attachment. Driveshaft sections and attaching hardware for condition and security.
Page 65 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Every third 100 hour inspection (300 hours) or 12 months: Check left and right elevator assemblies for excessive axial and radial play using a dial indicator mounted on the tailboom, with stylus touching inboard edge of elevator near attachment bolt for axial measurement, and touching upper surface near attachment bolt for radial measurement.
Page 66 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Control tube bellcranks, supports, and attaching hardware for corrosion, security, wear, and damage. Every sixth 100 hour inspection (600 hours) or 12 months: Collective flight controls: a.
Page 67 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 67 COLLECTIVE AND CYCLIC FLIGHT CONTROL ACTUATORS — Detailed Visual Inspection Universal bearings for looseness. Input lever bearings and bolts for wear and looseness. Fasteners attaching cylinder lower supports to structure for looseness.
Page 68 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER TAIL ROTOR FLIGHT CONTROL ACTUATOR Tail rotor hydraulic actuator for leaks and security of attachment, mechanical damage, corrosion, and bearings and linkages for looseness.
Page 69 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER RIGHT POWER SECTION NOTE Refer to Pratt & Whitney Canada PT6T-3/-3B Maintenance Manual engine inspection requirements. Every third 100 hour inspection (300 hours) or 12 months: —...
Page 70 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Right power section starter generator cooling ducts for obstruction, kinking, and security. Left power section starter generator brushes for allowable wear.
Page 71 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER — Restoration Clean chip detectors. — Functional Check Test chip detectors electrical circuits. Chapter 95 INSTRUMENTS NOTE The following checks are required every 12 months only.
Page 72 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 96 BATTERY SYSTEM Service battery in accordance with battery manufacturer’s recommendation. Inspect battery compartment for general condition. Check battery mount for security and corrosion. Chapter 96 POWER DIODES Every third 100 hour inspection (300 hours) or 12 months:...
Page 73 BHT-212-MM-1 Figure 5-1. Fuselage Tailboom Attachment Inspection 5-00-00 Page 50 Rev. 14 26 JUN 2013 Export Classification C, ECCN EAR99...
Page 74 BHT-212-MM-1 Figure 5-2. Inspection of Beam Caps 5-00-00 26 JUN 2013 Rev. 14 Page 51/52 Export Classification C, ECCN EAR99...
Page 76 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-10. 1000 HOURS — PART A INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE For helicopters on the Part A inspection program, accomplish the following checks each 1000 hours of...
Page 77 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-10. 1000 HOURS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Disconnect bottom of each drive link from swashplate trunnion and each mixing lever control tube from scissors. Check swashplate duplex bearing and collective sleeve hub bearing set for roughness and ease of rotation.
Page 78 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-11. 3000 HOURS/5 YEARS — PART A INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE For helicopters on the Part A inspection program, accomplish each 3000 hours of flight operation or...
Page 79 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-11. 3000 HOURS/5 YEARS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Complete 1000 hour — Part A inspection. AFTER COMPLETION OF INSPECTION Reinstall all panels, fairings, and cowlings removed during inspection. Carry out a ground run and leak check prior to releasing the helicopter back to service.
Page 80 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-11. 3000 HOURS/5 YEARS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Under floor fuel cell cavities left and right at FS 102.0 to 145.56 joints and supports for corrosion, cracks, and bottom skin damage.
Page 81 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-11. 3000 HOURS/5 YEARS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Tailboom and fin driveshaft covers for condition and attachment. Tailboom and fin external skin for damage, corrosion, and cracks. Tailboom access panels and covers for condition and attachment.
Page 82 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-11. 3000 HOURS/5 YEARS — PART A (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Check throttle controls for proper operation. Check collective controls for proper operation. 5-00-00 26 JUN 2013 Rev. 14 Page 59/60 Export Classification C, ECCN EAR99...
Page 84 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE For helicopters on the Part B inspection program, accomplish the following checks each 25 hours of...
Page 85 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 5 Review Special Inspections and carry out applicable inspections. Examine all inspection windows and sight glasses for cracking, crazing, and discoloration. If any of these conditions are present the part must be removed and replaced prior to returning helicopter to service.
Page 86 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 30 Windshield wiper arms and blades for serviceability and security. Chapter 29 Remote hydraulic filter bypass indicator — check for bypass indication.
Page 87 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER g. Floats for proper stowage and condition (if installed). Chapter 96 Landing light and searchlight for condition and security. Chapter 97 Antennas for damage, cleanliness, and security.
Page 88 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 96 and 11. Avionics and electrical equipment: Chapter 97 a. Pedestal mounted avionics/electrical equipment for condition, cleanliness, and security. b. Overhead console for condition, cleanliness, and security.
Page 89 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. External oil filter for bypass indication. c. Cases for damage, corrosion, condition, and evidence of leakage. d. Accessories for condition, corrosion, damage, and security of attachment.
Page 90 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Hydraulic system 1 pump for leaks, damage, and security. d. Hydraulic system 1 and 2 valve and filter modules for leaks, damage, and security.
Page 91 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 Fuselage structure: a. Avionics/electrical heater compartments evidence of water entrapment. b. Engine decks condition evidence delamination. Chapter 96 and Avionics and electrical equipment for security and Chapter 97 condition.
Page 92 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER e. Power section 2 for proper oil level. f. Reduction gearbox for proper oil level. Chapter 26 Engine compartment fire extinguisher containers for proper charge, condition, and mounting.
Page 93 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 FUSELAGE AFT TAILBOOM ATTACHMENT Inspect fuselage tailboom attachment points for security. Every fourth 25 hour/30 day inspection: a. Inspect fuselage and tailboom attachment components and hardware for cracks with 10X magnifying glass.
Page 94 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER d. Check elevator horn to elevator spar attaching bolts and surrounding joint for cracks, corrosion, and security. e. Check elevator control tubes, supports, attaching hardware, and surrounding structure for corrosion, damage, and security.
Page 95 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER WARNING THE CAUSE OF ANY DISCOLORATION SHALL BE DETERMINED AND CORRECTED PRIOR TO NEXT FLIGHT. d. Flexible couplings and surrounding areas for grease leakage, damage, corrosion, and evidence of overheat as indicated by TEMP-PLATES or coupling discoloration.
Page 96 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Overheat TEMP-PLATES for condition and security. TEMP-PLATES must not show evidence of over temperature indication, deterioration, debonding, or excessive discoloration of the epoxy overcoating.
Page 97 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 64 10. Tail rotor hub and blade assembly: WARNING NO CRACKS ARE PERMITTED ON ANY SURFACE OF THE TAIL ROTOR BLADES. a.
Page 98 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER 11. Every fourth 25 hour/30 day inspection: CAUTION COUNTERWEIGHT BELLCRANK RETENTION NUTS P/N MS14145L6 OR ITS EQUIVALENT MS17826-6 ARE DESIGNATED AS ONE TIME USE ONLY.
Page 99 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 29 Hydraulic systems: a. Hydraulic system 2 pump for leakage and security. b. Hydraulic lines for leaks, chafing, and kinking. c.
Page 100 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER a. Swashplate and support assembly and collective lever for security and mechanical and corrosion damage. Pay special attention to gimbal ring bearings, trunnion bearings, and attaching hardware for excessive looseness and security.
Page 101 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-12. 25 HOURS/30 DAYS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 63 Main rotor mast: a. Inspect mast assembly for security, corrosion, and mechanical damage. Pay particular attention to area contacted by main rotor static stops and damper assembly/adapter set splines.
Page 102 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE For helicopters on the Part B inspection program, accomplish the following checks each 300 hours of...
Page 103 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER FUSELAGE — CABIN Chapter 53 Forward fuselage: a. Cabin exterior structure for corrosion and damage. b. Cabin interior structure for corrosion and damage. c.
Page 104 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE The following inspection (step c step d) is for helicopters equipped with escape panels which may be identified by a rotating handle installed below the passenger door windows.
Page 105 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER h. Clean exposed area of actuator piston with hydraulic fluid and a clean lint-free cloth. i. Check hydraulic cylinder piston rod for evidence of excessive wear and scoring.
Page 106 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER g. Actuator linkage for wear and security. h. Clean exposed area of actuator piston with hydraulic fluid and a clean lint-free cloth. i.
Page 107 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER f. Mounts for damage and security. g. Lift link and attachments for corrosion, damage, and security. Bearings for looseness. BHT-212-CR&O h. Torque check — top case to ring gear case nuts, ring gear case to main case nuts and main case to support case nuts 230 to 250 inch-pounds (25.99 to 28.25 Nm).
Page 108 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chip detectors for debris. Clean chip detector. Test chip detector electrical circuits. Chapter 71 ENGINE ELECTRICAL CONNECTIONS Left power section ignition leads for corrosion, chafing, and security.
Page 109 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 76 ENGINE FUEL AND POWER CONTROLS Engine control linkages for looseness, lost motion, chafing, damage, and security of attachment. Bellcranks, mounts, and jackshafts. Check controls for smooth movement through full travel ranges.
Page 110 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Inspect tailboom joints, splices, longerons, attach fittings, and attaching hardware for corrosion, damage, and cracks. ASB 212-90-63 d. Remove plug button at BS 99.00. NOTE Paint fissures are common in the splice area, cracks will be evident by black powder emanating from...
Page 111 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Tail rotor hydraulic actuator for leaks and security of attachment, damage, corrosion, and bearings and linkages for looseness. Chapter 67 Elevator: —...
Page 112 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Driveshaft sections attaching hardware condition and security. d. Coupling clamps for cracks in or near bolt lugs. Clamps for proper position . Chapter 65 Intermediate gearbox: a.
Page 113 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-13. 300 HOURS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Remove BIS battery. Perform battery condition check on replacement battery. Install replacement battery. Chapter 52 and CABIN ROOF Chapter 53 Cabin roof structure: a.
Page 114 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-14. 600 HOURS/12 MONTHS — PART B INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. ______________________ FACILITY: _________________ _ _________________________ HELICOPTER S/N: __________ _ _________________________ REGISTRY NO.: ____________ _ _________________________ TOTAL TIME:________________________________________ SIGNATURE: _______________ _ _________________________ NOTE For helicopters on the Part B inspection program, accomplish the following checks each 600 hours flight...
Page 115 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-14. 600 HOURS/12 MONTHS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER AFTER COMPLETION OF INSPECTION Reinstall all panels, fairings, and cowlings removed during inspection. Carry out a ground run and leak check prior to releasing the helicopter back to service.
Page 116 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-14. 600 HOURS/12 MONTHS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 67 Collective flight controls: a. Friction shoes and liners for condition. b. Flight control systems bellcrank and control tubes for damage, chafing, corrosion, and security of attachment.
Page 117 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-14. 600 HOURS/12 MONTHS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 62 10. Swashplate and support assembly, and scissors and sleeve assembly: a. Disconnect bottom of each drive link from swashplate trunnion and each mixing lever control tube from scissors.
Page 118 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-14. 600 HOURS/12 MONTHS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER a. Remove and inspect hydraulic filter elements. b. Discard or clean filter elements as applicable. c. Install hydraulic filter elements. Chapter 63 d.
Page 119 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-14. 600 HOURS/12 MONTHS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Check generator control units for damage and security of mounting and terminals. c. Inspect all exposed wire bundles, bundle supports and connectors for damage, corrosion, and security.
Page 120 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-14. 600 HOURS/12 MONTHS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 26 Functionally check baggage compartment smoke detector. Chapter 67 Synchronized elevator: a. Remove left and right elevators. b. Clean elevator spars and inspect for corrosion. c.
Page 122 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-15. 3000 HOURS/ 5 YEARS — PART B INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE For helicopters on the Part B inspection program accomplish the following checks each 3000 hours...
Page 123 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-15. 3000 HOURS/ 5 YEARS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER AFTER COMPLETION OF INSPECTION Reinstall all panels, fairings, and cowlings removed during inspection. Carry out a ground run and leak check prior to releasing the helicopter back to service.
Page 124 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-15. 3000 HOURS/ 5 YEARS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER 10. Bottom skin FS 23.0 to 243.937 for damage. Joints for corrosion. Access panels and covers for condition and attachment. 11.
Page 125 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-15. 3000 HOURS/ 5 YEARS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Tailboom access panels and covers for condition and attachment. Tailboom baggage compartment door for condition, attachment, and latching. Tailboom baggage compartment interior for damage and corrosion.
Page 126 BHT-212-MM-1 SCHEDULED INSPECTIONS 5-15. 3000 HOURS/ 5 YEARS — PART B (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Check throttle controls for proper operation. Check collective controls for proper operation. 5-00-00 Export Classification C, ECCN EAR99 26 JUN 2013 Rev. 14 Page 103...
Page 127 BHT-212-MM-1 212_MM_05_0009 Figure 5-3. Collective Stick Tube 5-00-00 Page 104 Rev. 14 26 JUN 2013 Export Classification C, ECCN EAR99...
Page 128 BHT-212-MM-1 SPECIAL INSPECTIONS 5-16. SPECIAL INSPECTION 17. Fin spar cap inspection every 300 hours. Perform applicable special inspection of helicopter: 18. Each 300 hours/12 months of transmission operation. Daily inspection. 19. Each 300 hours/3 months of driveshaft operation. Daily or each 10 hours of flight, whichever occurs first until 250 hours.
Page 129 BHT-212-MM-1 For additional information, refer to BHT-ALL-SPM. If NOTE any confusion exists, or a clarification is desired, contact Product Support Engineering. Torque check is the term used when the specified torque or standard torque plus tare torque is applied to a fastener in a Torque Check Requirements tightening direction.
Page 130 BHT-212-MM-1 SPECIAL INSPECTIONS 5-17. DAILY INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ Chapter 62 MAIN ROTOR HUB GRIP 204-011-121-009 —...
Page 131 BHT-212-MM-1 Figure 5-4. Inspection of Main Rotor Hub Grip Tangs, Barrel and Drag Brace Attachment Lugs 5-00-00 Page 108 Rev. 16 15 NOV 2018 Export Classification C, ECCN EAR99...
Page 132 BHT-212-MM-1 SPECIAL INSPECTIONS 5-18. DAILY OR EACH 10 HOURS OF FLIGHT OPERATION, WHICHEVER OCCURS FIRST UNTIL 250 HOURS INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE...
Page 133 Install quill pad cover or rotor brake quill. Spare (uninstalled) affected spiral bevel gears. a. Return spare affected serial numbered spiral bevel gears Bell Helicopter Textron inspection reidentification. Refer to Information Letter IL GEN-04-98 for shipping instructions. 5-00-00 Page 110 Rev.
Page 134 BHT-212-MM-1 212_MM_05_0010 Figure 5-5. Spiral Bevel Gears Serial Numbers 5-00-00 Export Classification C, ECCN EAR99 26 JUN 2013 Rev. 14 Page 111...
Page 135 BHT-212-MM-1 ROTOR BRAKE QUILL PORT LOOKING UP THROUGH ROTOR BRAKE QUILL PORT MANUFACTURING FLATS INPUT PINION COAST SIDE PATTERN (VERY LIGHT) LOCATED AT ONE OR TWO POSITIONS NOT ACCEPTABLE DETACHED STRIKE MARKS USUALLY ONE PER TOOTH USUALLY ON ONE OR MORE GROUPS OF 2, 3 OR 4 TEETH SCORED PATCH NOT CONCAVE SIDE...
Page 136 BHT-212-MM-1 Figure 5-6. Inspection of Spiral Bevel Gear (Sheet 2 of 3) 5-00-00 Export Classification C, ECCN EAR99 26 JUN 2013 Rev. 14 Page 113...
Page 137 BHT-212-MM-1 Figure 5-6. Inspection of Spiral Bevel Gear (Sheet 3 of 3) 5-00-00 Page 114 Rev. 14 26 JUN 2013 Export Classification C, ECCN EAR99...
Page 138 BHT-212-MM-1 SPECIAL INSPECTIONS 5-19. BETWEEN 5 AND 10 HOURS OF FLIGHT AFTER EACH INSTALLATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish between 5 and 10 hours of flight after...
Page 139 BHT-212-MM-1 SPECIAL INSPECTIONS 5-19. BETWEEN 5 AND 10 HOURS OF FLIGHT AFTER EACH INSTALLATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 65 INTERMEDIATE GEARBOX Torque check intermediate gearbox retaining bolts 50 to 70 inch-pounds (5.65 to 7.91 Nm). 5-00-00 Page 116 Rev.
Page 140 BHT-212-MM-1 SPECIAL INSPECTIONS 5-20. FIN SPAR CAP INSPECTION EVERY 8 HOURS INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ Accomplish inspection spar...
Page 142 BHT-212-MM-1 SPECIAL INSPECTIONS 5-21. EACH 25 HOURS FOR THE NEXT FOUR INSPECTIONS INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ TAIL ROTOR HANGER BEARINGS WITNESS MARKS NOTE Accomplish visual inspection of witness marks (only...
Page 143 BHT-212-MM-1 SPECIAL INSPECTIONS 5-21. EACH 25 HOURS FOR THE NEXT FOUR INSPECTIONS (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Remove any hanger bearing from service where the witness marks indicate that the grease shield has moved. 5-00-00 Page 120 Rev.
Page 144 BHT-212-MM-1 SPECIAL INSPECTIONS 5-22. EACH 25 HOURS OF FLIGHT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 25 flight hours of operation.
Page 145 BHT-212-MM-1 SPECIAL INSPECTIONS 5-22. EACH 25 HOURS OF FLIGHT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Repeat step 1 on axis 90° and attempt to detect looseness in line with gimbal ring attach points to inner ring. Maximum allowable axial looseness across the gimbal ring bearing and attaching bolts is 0.005 inch (0.127 mm).
Page 146 BHT-212-MM-1 SPECIAL INSPECTIONS 5-22. EACH 25 HOURS OF FLIGHT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER CAUTION FOR INSP ECTION OF THE BLADE ON THE L O W E R S I D E , T H E B L A D E M U S T SUPPORTED AT THE TIP TO REMOVE ANY BOW.
Page 147 BHT-212-MM-1 SPECIAL INSPECTIONS 5-22. EACH 25 HOURS OF FLIGHT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER CAUTION DO NOT TO REMOVE ANY PARENT MATERIAL FROM THE SKIN/DOUBLERS DURING SANDING OPERATION. Carry out a detailed visual inspection of the top and bottom inspection areas of the blade using a 3X magnifying glass and a strong light source.
Page 148 BHT-212-MM-1 SPECIAL INSPECTIONS 5-22. EACH 25 HOURS OF FLIGHT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER CAUTION DO NOT TO REMOVE ANY PARENT MATERIAL FROM THE SKIN/DOUBLERS DURING SANDING OPERATION. If edge voids between grip plate/doublers/skin are found, determine depth and length by using 0.0015 inch (0.038 mm) feeler gauge.
Page 149 BHT-212-MM-1 SPECIAL INSPECTIONS 5-22. EACH 25 HOURS OF FLIGHT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 64 TAIL ROTOR BLADE Clean each tail rotor blade by hand using mild soap and cheesecloth (C-486) in a spanwise direction; dry thoroughly. Carry out a detailed visual inspection of both sides of the entire blade with a 3X magnifying glass, or higher, and a bright light.
Page 150 BHT-212-MM-1 SPECIAL INSPECTIONS 5-22. EACH 25 HOURS OF FLIGHT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER If any blistering, peeling, flaking, bubbling, or cracked paint is detected, remove the paint from the affected area by sanding in a spanwise direction only with an abrasive cloth or paper (C-406) 240 grit or finer and a final sanding using an abrasive cloth or paper (C-406) 400-grit or finer.
Page 151 BHT-212-MM-1 212_MM_05_0006a Figure 5-6A. Tail Rotor Blade - Detailed Inspection 5-00-00 Page 126B Rev. 16 15 NOV 2018 Export Classification C, ECCN EAR99...
Page 152 BHT-212-MM-1 SPECIAL INSPECTIONS 5-23. EACH 7 DAYS IN A CORROSIVE ENVIRONMENT AND EACH 30 DAYS IN A NONCORROSIVE ENVIRONMENT INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE...
Page 154 BHT-212-MM-1 SPECIAL INSPECTIONS 5-24. 50 HOURS AFTER INSTALLATION OF COMPONENTS INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish 50 flight hours after installation of components.
Page 156 BHT-212-MM-1 SPECIAL INSPECTIONS 5-25. EACH 50 HOURS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 50 hours of component operation.
Page 157 BHT-212-MM-1 SPECIAL INSPECTIONS 5-25. EACH 50 HOURS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Visually inspect bearing for indications of lubricant depletion, metal contamination, and bearing for roughness when rotated by hand. Rough bearing or metal contamination is cause for immediate replacement.
Page 158 BHT-212-MM-1 SPECIAL INSPECTIONS 5-26. EACH 100 HOURS OF MAIN ROTOR BLADE OPERATION — DELETED INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE The Each 100 Hours of Main Rotor Blade Operation special inspection has been moved to the Each 25 Hours of Flight Operation special inspection.
Page 160 BHT-212-MM-1 SPECIAL INSPECTIONS 5-27. EACH 100 HOURS/12 MONTHS OF TRANSMISSION OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 100 hours or 12 months of transmission operation, whichever occurs first.
Page 161 BHT-212-MM-1 SPECIAL INSPECTIONS 5-27. EACH 100 HOURS/12 MONTHS OF TRANSMISSION OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Helicopters S/N 31207 and subsequent (and helicopters modified by TB 212-83-78) use 3 micron filter element. Oil change and filter replacement is extended to 1/2 transmission TBO or 12 months, whichever occurs first.
Page 162 BHT-212-MM-1 SPECIAL INSPECTIONS 5-28. EACH 100 HOURS/12 MONTHS OF INTERMEDIATE GEARBOX OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 100 hours or 12 months inspection of intermediate gearbox operation, whichever occurs...
Page 164 BHT-212-MM-1 SPECIAL INSPECTIONS 5-29. EACH 100 HOURS/12 MONTHS OF TAIL ROTOR GEARBOX OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 100 hours or 12 months inspection...
Page 166 BHT-212-MM-1 SPECIAL INSPECTIONS 5-30. EACH 100 HOURS/12 MONTHS OF BATTERY SYSTEM OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 100 hours or 12 months inspection of battery system operation, whichever occurs first.
Page 168 BHT-212-MM-1 SPECIAL INSPECTIONS 5-31. 100 HOURS AFTER INSTALLATION OF TAILBOOM INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish hours...
Page 170 BHT-212-MM-1 SPECIAL INSPECTIONS 5-32. EACH 150 HOURS OF STARTER GENERATOR P/N 200SG119Q OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 150 hours of starter generator P/N...
Page 172 BHT-212-MM-1 SPECIAL INSPECTIONS 5-33. FIN SPAR CAP INSPECTION EVERY 300 HOURS INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish inspection of fin spar caps P/N 212-030-125-001 and 212-030-447-101 every 300...
Page 174 BHT-212-MM-1 SPECIAL INSPECTIONS 5-34. EACH 300 HOURS/12 MONTHS OF TRANSMISSION OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 300 hours or 12 months inspection of transmission operation, whichever occurs first.
Page 176 BHT-212-MM-1 SPECIAL INSPECTIONS 5-35. EACH 300 HOURS/3 MONTHS OF DRIVESHAFT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 300 hours or 3 months of driveshaft operation, whichever occurs first.
Page 178 BHT-212-MM-1 SPECIAL INSPECTIONS 5-35A. EACH 300 HOURS/12 MONTHS INSPECTION OF TAIL ROTOR CONTROL TUBE AND BEARING INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE...
Page 180 BHT-212-MM-1 SPECIAL INSPECTIONS 5-36. MAIN ROTOR GRIP ULTRASONIC INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Main rotor grips P/N 204-011-121-009 with 15000 hours or more Time In Service (TIS) are to be...
Page 181 II or III ultrasonic capability for further investigation. All grips that have a crack indication and have been inspected by a level II or III are to be sent to Bell Helicopter Textron. Refer to Information Letter IL GEN-04-98 for shipping instructions.
Page 182 BHT-212-MM-1 SPECIAL INSPECTIONS 5-37. EACH 500 HOURS/6 MONTHS OF BLADE SERVICE INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 500 hours or 6 months of blade inspection system (if installed), whichever occurs...
Page 184 BHT-212-MM-1 SPECIAL INSPECTIONS 5-38. EACH 600 HOURS OF TRANSMISSION OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each...
Page 185 BHT-212-MM-1 SPECIAL INSPECTIONS 5-38. EACH 600 HOURS OF TRANSMISSION OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Disassemble input pinion quill assembly sufficiently to ascertain whether triplex ball bearing outer races have rotated in sleeve. Note if etched V markings are still aligned. If bearing outer races have rotated, complete the disassembly of quill.
Page 186 BHT-212-MM-1 SPECIAL INSPECTIONS 5-39. 600 HOURS/6 MONTHS OF TAIL ROTOR DRIVESHAFT COUPLING OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 600 hours of component operation...
Page 188 BHT-212-MM-1 SPECIAL INSPECTIONS 5-40. 600 HOURS/12 MONTHS OF MAIN DRIVESHAFT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 600 hours or 12 months of main driveshaft operation, whichever occurs first.
Page 190 BHT-212-MM-1 SPECIAL INSPECTIONS 5-40A. EACH 600 HOURS/12 MONTHS INSPECTION OF MAGNETIC BRAKE ASSEMBLY INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish the following inspection each 600 hours...
Page 192 BHT-212-MM-1 SPECIAL INSPECTIONS 5-40B. EACH 600 HOURS/12 MONTHS INSPECTION OF FIRE EXTINGUISHER DISCHARGE TUBES INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish the following inspection each 600 hours...
Page 194 BHT-212-MM-1 SPECIAL INSPECTIONS 5-41. EACH 1000 HOURS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each...
Page 195 BHT-212-MM-1 SPECIAL INSPECTIONS 5-41. EACH 1000 HOURS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 79 Install oil cooler blowers. 5-00-00 Page 164 Rev. 14 26 JUN 2013 Export Classification C, ECCN EAR99...
Page 196 BHT-212-MM-1 SPECIAL INSPECTIONS 5-42. FIRST 1000 HOURS OF COMPONENT TIME AND EACH 3000 HOURS THEREAFTER OF COMPONENT TIME INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE...
Page 197 BHT-212-MM-1 SPECIAL INSPECTIONS 5-42. FIRST 1000 HOURS OF COMPONENT TIME AND EACH 3000 HOURS THEREAFTER OF COMPONENT TIME (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Inspect flight control tube assemblies 212-076-151-001/-003/-005/-007/-009/-011 as follows: a. Measure and record overall length of control tube, and then remove adjustable clevis.
Page 198 BHT-212-MM-1 SPECIAL INSPECTIONS 5-42. FIRST 1000 HOURS OF COMPONENT TIME AND EACH 3000 HOURS THEREAFTER OF COMPONENT TIME (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 67 ELEVATORS — Inspect Remove and Inspect elevators as follows: BHT-212-CR&O a. Remove both elevators and inspect condition of ears on elevator horn 205-001-914 and mating ears on elevator attach fitting 205-030-475.
Page 200 BHT-212-MM-1 SPECIAL INSPECTIONS 5-43. EACH 1000 HOURS/12 MONTHS OF MAIN ROTOR BLADE OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 1000 hours or 12 months of main...
Page 202 BHT-212-MM-1 SPECIAL INSPECTIONS 5-44. EACH 1200 HOURS/24 MONTHS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 1200 hours or 24 months of listed component operation, whichever occurs first.
Page 203 BHT-212-MM-1 SPECIAL INSPECTIONS 5-44. EACH 1200 HOURS/24 MONTHS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER MAIN ROTOR YOKE 212-011-102-ALL — Detailed Visual Inspection BHT 212-CR&O Remove bearing races and spacers. Inspect yoke spindle for cracks and corrosion pits. Inspect yoke spindle bearing journals for wear.
Page 204 BHT-212-MM-1 SPECIAL INSPECTIONS 5-44. EACH 1200 HOURS/24 MONTHS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER For main rotor grip 204-011-121-009, inspect grip barrels both leading and trailing sides for evidence of hairline cracks (Figure 5-7). Check for gap (360°) between flange of blade bolt bushing and surface of grip tang.
Page 205 BHT-212-MM-1 GRIP (204-011-121) INSPECT BUFFER PAD FOR DELAMINATION (IF INSTALLED) AREA TO BE INSPECTED UPPER AND LOWER TANGS ALL EXPOSED SURFACES AREA TO BE INSPECTED GRIP BARREL LEADING AND TRAILING SIDES EXPOSED SURFACE (-009 GRIP ONLY) 212_MM_05_0007 Figure 5-7. Inspection of Main Rotor Hub Grip (1200 Hours/24 Months) 5-00-00 Page 174 Rev.
Page 206 BHT-212-MM-1 SPECIAL INSPECTIONS 5-45. EACH 1200 HOURS OF MAIN ROTOR HUB PIN OPERATION — DELETED INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE The Each 1200 Hours of Main Rotor Hub Pin Operation special inspection has been moved to the 1200 Hour/24 Months of Component Operation special inspection.
Page 208 BHT-212-MM-1 SPECIAL INSPECTIONS 5-45A. EVERY 12 MONTHS/2500 LANDINGS HIGH FORWARD CROSSTUBE DEFLECTION CHECK INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish the deflection check of the High Forward...
Page 210 BHT-212-MM-1 SPECIAL INSPECTIONS 5-45B. EVERY 12 MONTHS/5000 LANDINGS HIGH FORWARD CROSSTUBE FLUORESCENT PENETRANT INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish the fluorescent penetrant inspection of...
Page 212 BHT-212-MM-1 SPECIAL INSPECTIONS 5-46. EACH 24 MONTHS OF FLIGHT CONTROL SYSTEM BOLT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 24 months of flight control system...
Page 213 BHT-212-MM-1 SPECIAL INSPECTIONS 5-46. EACH 24 MONTHS OF FLIGHT CONTROL SYSTEM BOLT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER f. Two scissors tube to scissors bolts P/N 20-057-5-27D. g. Two pitch link to universal tube bolts P/N 20-057-6-27D. h.
Page 214 BHT-212-MM-1 SPECIAL INSPECTIONS 5-46. EACH 24 MONTHS OF FLIGHT CONTROL SYSTEM BOLT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Inspect bolts for thread damage, shank wear, and corrosion. Replace any bolt that has damaged threads, detectable shank wear, or exhibits corrosion pitting. Chapter 67 Apply corrosion preventive compound (C-104) to shanks of bolts only and install bolts.
Page 216 BHT-212-MM-1 SPECIAL INSPECTIONS 5-47. EACH 3000 HOURS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish each 3000 hours of listed component operation.
Page 217 BHT-212-MM-1 SPECIAL INSPECTIONS 5-47. EACH 3000 HOURS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Parts exhibiting evidence of wear or physical damage shall be checked dimensionally. Refer to BHT-212-CR&O manual for wear and damage limits. BHT-212-CR&O Disassemble transmission to accomplish the following: a.
Page 218 BHT-212-MM-1 SPECIAL INSPECTIONS 5-47. EACH 3000 HOURS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Planetary component inspection: BHT-212-CR&O a. Visually inspect all parts of planetary assembly for evidence of wear and/or damage. b. Visually inspect gear tooth contact patterns on eight pinion assemblies in upper planetary assembly.
Page 219 BHT-212-MM-1 SPECIAL INSPECTIONS 5-47. EACH 3000 HOURS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Remove B4429 chip detector from 212-040-053 case. Clean chip detector as required using drycleaning solvent (C-304). Visually inspect chip detector for cut packings, burrs, bent tube, and foreign material.
Page 220 BHT-212-MM-1 SPECIAL INSPECTIONS 5-47. EACH 3000 HOURS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. The maximum acceptable depth of pitting is 0.0005 inch (0.0127 mm). Pitting is acceptable only in area on gear or shaft surface outside of diameter of bolt holes and is not acceptable within 0.100 inch (2.54 mm) of the edge of a bolt hole.
Page 221 BHT-212-MM-1 SPECIAL INSPECTIONS 5-47. EACH 3000 HOURS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-212-CR&O Remove tail rotor drive quill 212-040-365-025, to gain access to accessory drive and sump gears. Visually inspect accessory case input quill gear 212-040-150-005, and tail rotor drive quill gear 212-040-151-009, for general condition and wear pattern.
Page 222 BHT-212-MM-1 SPECIAL INSPECTIONS 5-48. 10,000 HOUR TOTAL AIRFRAME TIME AND EACH 300 HOURS/12 MONTHS MAIN BEAM CAP OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE...
Page 224 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-49. CONDITION INSPECTION If applicable conditional inspection does not provide complete information on a specific type of incident or if any doubt exists as to the serviceability of Perform applicable conditional inspection of the helicopter of related components, contact: helicopter after hard landing, after blade strike or other rotating system torque spike, overspeed, overtorque, compressor stall or surge, lightning strikes, and after...
Page 226 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-50. AFTER HARD LANDING INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish inspection after hard landing. AFTER HARD LANDING NOTE Evaluate components removed from a helicopter...
Page 227 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-50. AFTER HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER — Inspect If a hard landing is suspected, step a through step h shall be accomplished: a. Inspect main and tail rotor blades for evidence of strike damage.
Page 228 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-50. AFTER HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER If a hard landing has occurred, the following steps shall be accomplished: a. Remove and perform an overhaul evaluation inspection of following components: (1) Mast assembly NOTE If there is any yielding or deformation in area contacted by main rotor hub static stops or any other...
Page 229 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-50. AFTER HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (8) Tail rotor gearbox (9) Tail rotor driveshafts (10) Tail rotor driveshaft hangers (11) Swashplate and support assembly (12) Scissors and sleeve assembly and collective levers (13) Stabilizer bar assembly (14) Helicopter structure directly supporting damaged...
Page 230 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-50. AFTER HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER h. Check all engine mount fittings and bolts for damage and looseness. i. Inspect engine firewalls for evidence of warping, crushing, or other damage. j.
Page 232 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-51. AFTER BLADE STRIKE OR OTHER ROTATING SYSTEM TORQUE SPIKE INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE To be accomplished after a main rotor blade or tail...
Page 233 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-51. AFTER BLADE STRIKE OR OTHER ROTATING SYSTEM TORQUE SPIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Components removed from helicopter evaluation following a sudden stoppage shall be evaluated as an interrelated group. Removal records accompanying each component...
Page 234 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-51. AFTER BLADE STRIKE OR OTHER ROTATING SYSTEM TORQUE SPIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Main rotor hub. (1) If main rotor blades were not damaged sufficiently to require blade replacement, hub may be retained in service. BHT-212-CR&O (2) If a main rotor blade is damaged sufficiently to require blade replacement, perform overhaul inspection on main...
Page 235 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-51. AFTER BLADE STRIKE OR OTHER ROTATING SYSTEM TORQUE SPIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-212-CR&O e. Remove and inspect main driveshaft visually. If evidence of yielding or deformation is noted, scrap driveshaft assembly and attaching bolts.
Page 236 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-51. AFTER BLADE STRIKE OR OTHER ROTATING SYSTEM TORQUE SPIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER If mast assembly does not exhibit evidence of torsional yielding and transmission has no obvious damage that would render it non-repairable, perform an overhaul evaluation on both the transmission and mast assembly.
Page 237 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-51. AFTER BLADE STRIKE OR OTHER ROTATING SYSTEM TORQUE SPIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (c) Cracks. (d) Loose or sheared rivets. (e) Scratches in excess of limits. (2) If inspection reveals no condition as previously listed in step (a) through...
Page 238 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-51. AFTER BLADE STRIKE OR OTHER ROTATING SYSTEM TORQUE SPIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (d) If no evidence of damage is found on either tail rotor blade, both blades may remain in service. (2) Tail rotor hubs with 212-011-702 yoke assembly and 212-011-713-103 flapping stop, reference ASB 212-96-101.
Page 239 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-51. AFTER BLADE STRIKE OR OTHER ROTATING SYSTEM TORQUE SPIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-212-CR&O (2) If inspection reveals no condition as listed in previous step (1), perform an overhaul. Make an entry in component record to show reason for removal was sudden stoppage.
Page 240 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-52. AFTER OVERSPEED INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish inspection after overspeed. AFTER OVERSPEED NOTE Components...
Page 241 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-52. AFTER OVERSPEED (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-212-CR&O (2) Perform overhaul conditional evaluation inspection. Make an entry in component record to show reason for removal was overspeed. Include amount of overspeed and duration, if known.
Page 242 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-52. AFTER OVERSPEED (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (3) Tail rotor gearbox. Check gearbox for security and retorque retaining nuts. (4) Main rotor mast. (5) Main input driveshaft. (6) Tail rotor driveshafts. (7) Tail rotor driveshaft hangers. (8) Stabilizer bar.
Page 244 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-53. AFTER OVERTORQUE INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish inspection after overtorque. AFTER OVERTORQUE NOTE Components...
Page 245 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-53. AFTER OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER PT6T-3 PT6T-3B BELL % P&WC BELL % P&WC TORQUE FT LB TORQUE FT LB 87.6 89.1 83.6 85.2 77.8 79.4 71.8 71.8 When overtorque has not exceeded 104% (108% for helicopters with TB 212-91-138 incorporated), perform thorough visual inspection of the following components.
Page 246 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-53. AFTER OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER l. Mast. m. Transmission. When overtorque exceeds 104% (108% for helicopters with TB 212-91-138 incorporated), but does not exceed 112% perform the following: a. Perform thorough visual inspection of components listed in step b.
Page 247 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-53. AFTER OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER When overtorque has exceeded 112% perform the following: a. Return the following components to an overhaul facility for overhaul evaluation. NOTE Component removal record of dynamic components shall reflect overtorque as reason for removal.
Page 248 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-54. AFTER ENGINE COMPRESSOR STALL OR SURGE INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish inspection after engine compressor stall or surge.
Page 249 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-54. AFTER ENGINE COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Power plant. a. Examine inlet screen for blockage. Pratt & Whitney b. Inspect engine compressor region for salt, dust, oil, or Canada PT6T-3/-3B other contaminants.
Page 250 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-54. AFTER ENGINE COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 65 e. Remove and inspect tail rotor driveshaft. f. Remove input and output drive quill from intermediate gearbox and inspect gear teeth on pinion and gear for damage with a 10X magnifying glass.
Page 251 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-54. AFTER ENGINE COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (4) Remove inboard and outboard drag brace bolts. Check bolts for deformation and perform magnetic particle inspection. If satisfactory, return to service. (5) Visually inspect stabilizer bar outer tubes for bending.
Page 252 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-54. AFTER ENGINE COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER e. If discrepancies found during inspection in step b through step d cannot be repaired by standard procedures, replace discrepant assembly. 5-00-00 26 JUN 2013 Rev.
Page 254 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-55. AFTER LIGHTNING STRIKES INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish inspection after lightning strikes. AFTER LIGHTNING STRIKES NOTE In all instances in the following inspections, if...
Page 255 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-55. AFTER LIGHTNING STRIKES (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER If visual indications of damage are present, proceed as follows: a. Remove main rotor blades and visually inspect. If blades show any of the following indications, scrap blades. (1) Inspect blades for signs of burns.
Page 256 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-55. AFTER LIGHTNING STRIKES (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER e. If main rotor blades, main rotor hub, main driveshafts, or tail rotor output coupling exhibit evidence of damage that can be attributed to a lightning strike, remove transmission and mast assembly for overhaul.
Page 257 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-55. AFTER LIGHTNING STRIKES (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER If no visual indications of damage are present, proceed as follows: Chapter 63 a. Remove and inspect all transmission chip detectors. (1) If excessive debris is found on chip detectors, remove transmission and mast assembly for overhaul.
Page 258 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-55. AFTER LIGHTNING STRIKES (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER f. Make repairs as required. When established that lightning has struck helicopter, inspections of electrical and instrument systems that follow are mandatory to ensure safety of flight. a.
Page 259 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-55. AFTER LIGHTNING STRIKES (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER g. Perform operational check on all instruments. Remove and repair/replace instruments and sensor found to be defective. h. Perform operational check on all caution messages for proper operation.
Page 260 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-55. AFTER LIGHTNING STRIKES (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER d. Any airframe metal parts not specifically identified above, but are suspect, shall be noted in maintenance log and shall be reinspected prior to next 100 hours of flight. 5-00-00 26 JUN 2013 Rev.
Page 262 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-56. AFTER ENGINE COMBINING GEARBOX CLUTCH NONENGAGEMENT, MISENGAGEMENT, OR IN-FLIGHT SLIPPAGE INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE: _______________ _ ________________________ NOTE Accomplish...
Page 263 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-56. AFTER ENGINE COMBINING GEARBOX CLUTCH NONENGAGEMENT, MISENGAGEMENT, OR IN-FLIGHT SLIPPAGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Misengagement. NOTE If a sprag clutch has failed to engage, and/or subsequently engages with or without audible or physical (helicopter jolt) indications, proceed as follows: Pratt &...
Page 264 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-56. AFTER ENGINE COMBINING GEARBOX CLUTCH NONENGAGEMENT, MISENGAGEMENT, OR IN-FLIGHT SLIPPAGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Components removed from helicopter evaluation following combining gearbox clutch nonengagement, misengagement, in-flight slippage shall be evaluated as an interrelated group. Removal records accompanying each component shall cross-reference part and serial numbers of other...
Page 265 BHT-212-MM-1 CONDITIONAL INSPECTIONS 5-56. AFTER ENGINE COMBINING GEARBOX CLUTCH NONENGAGEMENT, MISENGAGEMENT, OR IN-FLIGHT SLIPPAGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE If a tail rotor driveshaft has failed or yielded, all tail rotor driveshafts, hanger assemblies, intermediate gearbox, and tail rotor gearbox shall be replaced, and tail rotor drive quill in transmission shall be removed and inspected for damage in accordance...
Page 266 BHT-212-MM-1 COMPONENT OVERHAUL SCHEDULE 5-57. COMPONENT OVERHAUL SCHEDULE CAUTION The Component Overhaul Schedule (Table 5-1) provides the time interval between overhaul for each applicable helicopter component. OVERHAUL SCHEDULE FOR SOME KIT COMPONENTS AND/OR PARTS IS NOT COVERED IN THIS SCHEDULE. REFER A P P L I C A B L E S E R V I C E WARNING...
Page 267 BHT-212-MM-1 Table 5-1. Component Overhaul Schedule (Cont) OVERHAUL INTERVAL NOMENCLATURE PART NUMBER (HOURS) ROTORS (CONT) Scissors and Sleeve 204-011-401-019 On-condition Assembly Main Rotor Hub Assembly 204-012-101-009 2400 hours Main Rotor Hub Assembly 212-510-001-103 2400 hours Tail Rotor Hub Assembly 212-010-701-001 1000 hours Tail Rotor Hub Assembly 212-011-701-001...
Page 268 BHT-212-MM-1 Table 5-1. Component Overhaul Schedule (Cont) OVERHAUL INTERVAL NOMENCLATURE PART NUMBER (HOURS) POWER TRAIN (CONT) Engine to Transmission 212-040-005-003 1000 hours (Main) Driveshaft Engine to Transmission 212-040-005-007 3000 hours (Main) Driveshaft Mast Assembly with 204-040-366-015 1000 hours 204-040-136-009 Bearing Mast Assembly with 2500 hours 212-040-136-001 Bearing...
Page 269 BHT-212-MM-1 Table 5-1. Component Overhaul Schedule (Cont) NOTES: Operating time specified for overhaul of any given part number in this schedule applies to all successive dash numbers (or suffixes), unless otherwise specified. If tube assemblies 212-010-311-ALL or 540-011-319-001 are installed on stabilizer bar assembly 204-011-326, overhaul interval is conditional.

Textron Bell 212 Maintenance Manual

Chapter 5 - Inspections

Data Reference

Daily Inspection - Part a

Chapter 4 100 Hours/12 Calendar Months Inspections

Date

Facility

Helicopter S/N

Registry no

Total Time

Signature

Each Listed Inspection Item or Maintenance Function Is to be

Note

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Summary of Contents for Textron Bell 212

Page 1: General Information

Textron Bell 212 Maintenance Manual

Chapter 5 - Inspections

Data Reference

Daily Inspection - Part a

Chapter 4 100 Hours/12 Calendar Months Inspections

Date

Facility

Helicopter S/N

Registry no

Total Time

Signature

Each Listed Inspection Item or Maintenance Function Is to be

Note

Initial Other

Quick Links

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Summary of Contents for Textron Bell 212

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Table of Contents