Page 1 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-206L3-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-206L3-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-206L3-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Page 5 BHT-206L3-MM-1 LOG OF REVISIONS Insert latest revision pages and dispose of superseded ones. On a revised page, the text and/or illustration affected by the latest revision is shown by a vertical line. A revised page with only a vertical line next to the page number indicates that text has shifted or that non-technical correction(s) were made on that page.
Page 6 BHT-206L3-MM-1 LOG OF PAGES (CONT) Page No. Rev No. Page No. Rev No. Page No. Rev No. 157........... 16 16– 19 ........13 VOLUME 3 158........... 21 20 ..........22 Cover ........10 159/160........21 Title .......... 10 161........... 16 Chapter 9 PN..........
Page 7 BHT-206L3-MM-1 LOG OF PAGES (CONT) Page No. Rev No. Page No. Rev No. Page No. Rev No. Chapter 30 Title .......... 22 Chapter 64 1/2 ..........0 PN..........22 1/2 ..........22 3/4 ..........10 3 – 12 ........22 Chapter 62 13/14 ........22 Chapter 32 1 –...
Page 8 BHT-206L3-MM-1 LOG OF PAGES (CONT) Page No. Rev No. Page No. Rev No. Page No. Rev No. 32..........14 13 – 17 ........0 21..........17 33 – 34........0 18 – 20 ........10 22..........0 35..........22 21 ..........0 23..........
Page 9 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 11 CUSTOMER FEEDBACK RETURN VIA FAX TO PRODUCT SUPPORT ENGINEERING (450) 433-0272 Manual Title: ___________________________________________________________ Manual Number (if assigned): _____________________________________________ Date of Issue: ___________________________________________________________ Date of Last Revision: ___________________________________________________ Section, Chapter, Paragraph Affected: ______________________________________ Your Feedback: ________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ Now Reads: ____________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________...
Page 12 TAPE HERE From 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 13 Please complete this form and return by mail, e-mail (publications@b .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 ___________________________________________ Serial and Registration Number _________________________________________________...
Page 14 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 15 BHT-206L3-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 17 TC APPROVED BHT-206L3-MM-1 CHAPTER 4 — AIRWORTHINESS LIMITATIONS SCHEDULE TABLE OF CONTENTS Paragraph Chapter/Section Page Number Title Number Number AIRWORTHINESS LIMITATIONS SCHEDULE Airworthiness Limitations Schedule ..........4-00-00 FIGURES Figure Page Number Title Number Tailboom Upper Left Attachment Fitting (206-032-409-001) — Recurring 110-Hour Inspection ..............TABLES Table Page...
Page 18 BHT-206L3-MM-1 TC APPROVED REVISION NO. DATE OF SIGNATURE APPROVAL SIGNATURE Original Reissue Reissue 27 August 1992 09 December 2002 22 December 2003 30 October 2007 4-00-00 Page 2 Rev. 24 25 JUN 2019 Export Classification C, ECCN EAR99...
Page 19 TC APPROVED BHT-206L3-MM-1 REVISION NO. DATE OF SIGNATURE APPROVAL SIGNATURE 20 August 2008 26 May 2009 25 September 2009 8 April 2011 4-00-00 Export Classification C, ECCN EAR99 25 JUN 2019 Rev. 24 Page 3...
Page 20 BHT-206L3-MM-1 TC APPROVED REVISION NO. DATE OF SIGNATURE APPROVAL SIGNATURE 29 February 2012 1 June 2012 7 November 2012 25 JUNE 2019 4-00-00 Page 4 Rev. 24 25 JUN 2019 Export Classification C, ECCN EAR99...
Page 21 TC APPROVED BHT-206L3-MM-1 AIRWORTHINESS LIMITATIONS SCHEDULE 4-1. AIRWORTHINESS LIMITATIONS THE COMPONENT MUST BE REMOVED SCHEDULE FROM THE HELICOPTER NOT LATER THAN THE END OF THE LIFE LIMIT. IT M U S T E I T H E R M A D E UNSERVICEABLE OR MARKED IN A WARNING CONSPICUOUS MANNER TO PREVENT...
Page 22 BHT-206L3-MM-1 TC APPROVED APPLICABLE SERVICE INSTRUCTION ( S I ) O R M A I N T E N A N C E M A N U A L WARNING S U P P L E M E N T ( M M S ) F O R K I T...
Page 23 TC APPROVED BHT-206L3-MM-1 Table 4-1. Airworthiness Limitations Schedule (Cont) COMPONENT AIRWORTHINESS LIFE PART NUMBER MAIN ROTOR HUB AND BLADES (CONT) Main Rotor Blade 206-015-001-001/-103/-105/ 4000 hours -107/-109/-111/-113/-115/-117/ -119/-121 Main Rotor Blade 206-015-001-125/-127/-129/-131 2300 hours Tension Torsion Strap 206-310-004-103 1200 hours/48 months SWASHPLATE AND SUPPORT Lower Cyclic Tube 206-001-193-001...
Page 24 BHT-206L3-MM-1 TC APPROVED Table 4-1. Airworthiness Limitations Schedule (Cont) COMPONENT AIRWORTHINESS LIFE PART NUMBER TAIL ROTOR HUB AND BLADES (CONT) Tail Rotor Blade 206-016-201-001/-107/-113 2400 hours Tail Rotor Blade 206-016-201-127/-131/-135 2500 hours AIRFRAME Horizontal Stabilizer 206-023-119-167 MISCELLANEOUS KITS Fixed Floats Landing Gear Aft 206-050-169-011/-013 Crosstube Fixed Floats Landing Gear...
Page 25 Selected serial numbers of tail rotor yoke 206-011-819-101 will have been returned to Bell Helicopter Textron (BHT) for inspection and rework no later than 1 April 1988. Refer to ASB 206L-88-51, dated 23 April 1987 for list of serial numbers affected.
Page 26 BHT-206L3-MM-1 TC APPROVED Table 4-1. Airworthiness Limitations Schedule (Cont) NOTES (CONT): Each component with a retirement life sensitive to torque events will be assigned a maximum Retirement Index Number (RIN). This RIN corresponds to maximum allowed fatigue damage resulting from lifts and takeoffs.
Page 27 TC APPROVED BHT-206L3-MM-1 Table 4-1. Airworthiness Limitations Schedule (Cont) NOTES (CONT): Tail rotor blades 206-016-201-ALL (all dash numbers). It is permissible to use any tail rotor blade on 206L, 206L1, 206L3, and 206L4 provided that all conditions are met. Refer to TB 206L-94-167 Rev. A, dated 1 May 1995.
Page 28 BHT-206L3-MM-1 TC APPROVED Table 4-2. Inspection Limitations Schedule INSPECTION INTERVAL COMPONENT PART NUMBER (HOURS OPERATION TIME) Tailboom Upper Left Attachment 206-032-409-001 110 hours Fitting NOTES: Inspection limitation for the part number listed applies to all successive dash numbers for that component unless otherwise specified.
Page 29 TC APPROVED BHT-206L3-MM-1 (DETAILS OMITTED FOR CLARITY) INSPECTION PROCEDURE: Inspect upper left attachment fitting for cracks, mechanical damage, corrosion damage, loose rivets, and general condition. Refer to ASB 206L-09-158 for wear, damage, and repair limits. Repair fitting in accordance with ASB 206L-09-158. Replace cracked or damaged fitting or loose rivets in accordance with ASB 206L-09-158.
Page 31: Table Of Contents
BHT-206L3-MM-1 CHAPTER 5 — INSPECTIONS AND COMPONENT OVERHAUL SCHEDULE TABLE OF CONTENTS Paragraph Chapter/Section Page Number Title Number Number INSPECTIONS General ..................5-00-00 Items Not Covered and Inspection Responsibility ......5-00-00 Crash Damage................5-00-00 Types of Inspections ..............5-00-00 Definitions ..................5-00-00 Inspection and Overhaul Tolerance ..........
Page 32 BHT-206L3-MM-1 TABLE OF CONTENTS (CONT) Paragraph Chapter/Section Page Number Title Number Number 5-42 1500 Hours of Component Operation ..........5-00-00 5-43 1500 Hours of Component Operation and Every 50 Hours Thereafter ..................5-00-00 5-44 2250 Hours or 60 Months of Component Operation ...... 5-00-00 5-45 3000 Hours of Component Operation ..........
Page 33: General
Lead The Fleet (LTF), or any other special programs and the judgement of Bell Helicopter Textron Make sure the Alert Service Bulletins (ASB), the engineers. They are subject to change only by Bell...
Page 34: Crash Damage
CRASH DAMAGE overhaul schedule. Because of the many possible combinations that can For the common Bell Helicopter Textron approved result from crash damage, it is not possible to include optional equipment that is integrated into this the specific repair tasks in this category. The...
Page 35: Definitions
The engineering aspects of this change are approved. The program is closely • Periodic inspection — An inspection that is monitored by Bell Helicopter Textron in an repeated at equal time intervals. operational environment with selected operators. •...
Page 36: Inspection And Overhaul Tolerance
AIRWORTHINESS LIFE (CHAPTER 4). If approval of the inspection and overhaul tolerance is required by the applicable governing aviation authority, The Bell Helicopter Textron approved tolerance for this is the responsibility of the owner/operator. scheduled inspections, special inspections, interim inspections, and overhaul intervals, unless otherwise...
Page 37 BHT-206L3-MM-1 Calendar Example (10% or up to a maximum of 6 months calendar time, whichever is less): 12-MONTH NEXT 12-MONTH MAXIMUM ALLOWED INSPECTION CARRIED INSPECTION INSPECTION TOLERANCE OUT ON: DUE ON: DUE ON: June 10, 2010 10% of 12 months = 1.2 months July 12, 2010 July 31, 2011 (within 10% tolerance)
Page 39: Scheduled Inspections
5-8. AIRFRAME INSPECTION PROGRAM Table 5-1. 100-Hour Airframe Progressive Inspection Events Bell Helicopter Textron has developed airframe inspection programs to provide you with the flexibility AIRFRAME EVENT MAINTENANCE to permit maximum helicopter use. Depending on the...
Page 40: 300-Hour Airframe Progressive Inspection Program
BHT-206L3-MM-1 • As required by manufacturer Table 5-2. 300-Hour Airframe Progressive Inspection Events (Cont) • Weekly inspection AIRFRAME EVENT MAINTENANCE HOURS NUMBER ZONES • 12-month inspection • 12 months of component operation 5 and 6 • 24-month inspection 7 and 8 •...
Page 41 BHT-206L3-MM-1 • 1500 hours of component operation and every • As required by manufacturer 50 hours thereafter • Weekly inspection • 2250 hours or 60 months of component • 12-month inspection operation • 12 months of component operation • 3000 hours of component operation •...
Page 42: Airframe Periodic Inspection Program
BHT-206L3-MM-1 • 1200-hour inspection 5-15. CHANGING INSPECTION PROGRAM • As required by manufacturer You must use either the airframe periodic inspection program or the airframe progressive inspection • Weekly inspection program from the start. You can change between the two programs at any airframe operating time as •...
Page 43 BHT-206L3-MM-1 5-00-00 ECCN EAR99 25 FEB 2011 Rev. 16 Page 11...
Page 44 BHT-206L3-MM-1 5-00-00 Page 12 Rev. 16 25 FEB 2011 ECCN EAR99...
Page 45 BHT-206L3-MM-1 5-00-00 25 FEB 2011 Rev. 16 Page 13/14 ECCN EAR99...
Page 47 BHT-206L3-MM-1 ZONE 2 ZONE 1 ZONE 6 ZONE 5 ZONE 3 ZONE 4 ZONE 9 ZONE 7 ZONE 8 ZONE 10 - Main rotor hub and blade assembly Zone 1 - Tail rotor hub and blade assembly Zone 2 - Forward top deck Zone 3 - Power plant Zone 4...
Page 49 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ZONE 1 —...
Page 50: 100-Hour Airframe Progressive Inspection - Event No. 1
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER If applicable, reinstall main rotor blade leading edge erosion protection tape. Examine following main rotor assembly components for condition and security: a.
Page 51 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Touch up all repaired areas or areas of bare metal in accordance with applicable main rotor hub inspection and repair instructions.
Page 52 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Deformed or cracked skin in the area of the chordwise weights. d. Leading edge for erosion, nicks, dents or scratches. e.
Page 53 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 Clean transmission deck. Examine air induction cowling and plenum for damage, obstructions and cleanliness. Examine intake fairing windows for damage and cleanliness.
Page 54 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Verify all control tubes and bellcranks for freedom of travel throughout range. Chapter 62 SWASHPLATE ASSEMBLY AND MAST Clean swashplate assembly and mast. Disconnect main rotor pitch links from outer ring.
Page 55 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER 14. Examine the upper inside diameter of swashplate support for evidence of contact with the mast pole. 15. Connect and secure boot, idler (drive) link and main rotor pitch links to outer ring.
Page 56 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER a. Transmission link assemblies and bearings for damage and deterioration. b. Nodal beam flexures for condition and security. c. Forward and aft nodal beam deck supports for condition and security.
Page 57 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Ensure no sealant voids are visible around forward and aft nodal beam deck mounted supports and isolation mount. Recoat with sealant (C-308) as required. Chapter 63 MAIN DRIVESHAFT Examine main driveshaft as follows:...
Page 58 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-16. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER GROUND RUN CAUTION G R O U N D R U N O F H E L I C O P T E R T O B E ACCOMPLISHED BY QUALIFIED PERSONNEL ONLY.
Page 59 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-17. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ZONE 4 —...
Page 60: 100-Hour Airframe Progressive Inspection - Event No. 2
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-17. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 96 Examine the primary electrical ground connection in engine pan area for condition and security POWER PLANT Rolls-Royce 250-C30 Perform engine inspection per the applicable Rolls-Royce Series Operation and Operation and Maintenance Manual.
Page 61 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-17. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Check freedom of full throttle grip travel and idle release operation. Return to closed position. Check copilot throttle if installed.
Page 62 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-17. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DRIVETRAIN Chapter 63 Examine freewheel assembly for condition, leaks, and security. Chapter 63 Examine the freewheel unit chip detector for accumulated Chapter 96 material.
Page 63 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-17. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine fairing retainer for condition. Examine exterior of aft deck structure for condition. OIL SYSTEM Chapter 79 Examine oil cooler area for evidence of oil leaks. Examine oil cooler pan for cleanliness and make sure the drain is not blocked.
Page 64 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-17. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine aft short shaft (aluminium) splined adapter for adequate lubrication and freedom of movement. Torque check disc pack coupling fasteners 50 to 70 inch-pounds (5.7 to 7.9 Nm).
Page 65 Chapter 53 TAILBOOM STRUCTURE NOTE In the event that cracks are found during inspection of tailboom, contact Bell Helicopter Textron, Product Support Engineering. Examine tailbooms 206-033-004-045 and prior, modified in accordance with ASB 206L-87-47 as follows: a. Remove tail rotor driveshaft and gearbox fairings.
Page 66: 100-Hour Airframe Progressive Inspection - Event No. 3
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-18. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Prior to cleaning, use a minimum 5X magnifying glass to inspect for cracks and signs of developing cracks at the following locations: (1) Aft of stabilizer assembly, around rivets, which attach tail rotor driveshaft cover retention clips to tailboom.
Page 67 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-18. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. lnspect entire tailboom for cracks, dents, deformation, working rivets, and chafing between tailboom skin and fairing. Pay particular attention to rivets attaching the tail rotor gearbox support to the tailboom.
Page 68 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-18. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Torque check disc pack coupling fasteners 50 to 70 inch-pounds (5.7 to 7.9 Nm). TAIL ROTOR GEARBOX Chapter 53 Examine tail rotor gearbox support for condition and security.
Page 69 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-18. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 96 ELECTRICAL Examine all visible electrical components, wires, cables, and connectors in the area of the tailboom for chafing, and general condition and security.
Page 71 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-19. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ZONE 7 —...
Page 72: 100-Hour Airframe Progressive Inspection - Event No. 4
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-19. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine the interior trim for condition and security. Chapter 52 Verify sliding windows for safety and smoothness of sliding. Chapter 21 Examine the ventilation system for condition and security.
Page 73 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-19. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Verify operation of the pitot tube heating system. Verify operation of defog blowers. Verify operation of ENGINE OUT and LOW ROTOR RPM audio and mute switch (if installed).
Page 74 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-19. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine battery compartment door, door seal and attachment for condition and security. Chapter 52 Examine components in battery compartment for condition and security.
Page 75 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-19. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER ZONE 9 — AFT FUSELAGE PLACARDS AND MARKINGS Chapter 11 Examine the placards, decals and markings. Make sure they are readable, correctly applied and in agreement with the applicable configuration of your helicopter.
Page 76 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-19. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Examine drain lines for condition and security. d. Examine aft fuselage longerons for cracks, corrosion, and condition. Pay particular attention to the upper left longeron between aft fuselage frame at STA 204.49 and frame at STA 231.48.
Page 77 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-19. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine all optional equipment installed in the aft fuselage area for condition and security. Verify proper operation of fuel sump drain valve switch. ZONE 10 —...
Page 78 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-19. 100-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine skid shoes for condition and security. Examine skid tube saddles for corrosion, damage, and security. Examine ground handling wheel attachment bolts for condition and security.
Page 79: 100-Hour Airframe Periodic Inspection
BHT-206L3-MM-1 PERIODIC INSPECTION 5-20. 100-HOUR AIRFRAME PERIODIC INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MUCH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Do this inspection every 100 hours of operation or every 12 calendar months.
Page 81 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-21. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ZONE 1 —...
Page 82: 300-Hour Airframe Progressive Inspection - Event No. 1
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-21. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER If applicable, reinstall main rotor blade leading edge erosion protection tape. Examine following main rotor assembly components for condition and security: a.
Page 83 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-21. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER d. Ensure no sealant voids are visible around shields or wear sleeve, strap fittings, and grip closure. Recoat with sealant (C-308) as required.
Page 84 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-21. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER e. Bonded joints of blade skin mating area for suspected voids or cracks. Pay particular attention in the area of tip block and doublers.
Page 85 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-21. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-206L3-FM-1 Start the helicopter and conduct ground run at 100% N (BHT-206L4-FM-1 for check for leaks and ensure all systems are operational and 206L3+ IGW parameters are within Flight Manual limitations.
Page 87 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-22. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ZONE 3 —...
Page 88: 300-Hour Airframe Progressive Inspection - Event No. 2
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-22. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine particle separator (if applicable) vortex tubes, ejector tubes, and ejector nozzles for cleanliness, condition, and security. Examine forward deck drain(s) to ensure absence of obstruction.
Page 89 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-22. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Disconnect idler (drive) link from outer ring. Examine swashplate drive assembly for axial, radial, and accumulative wear. Disconnect boot from swashplate outer ring and lift up temporarily.
Page 90 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-22. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER 16. Connect and secure boot, idler (drive) link and main rotor pitch links to outer ring. 17. Examine swashplate assembly for condition and security. 18.
Page 91 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-22. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 63 TRANSMISSION AND PYLON ASSEMBLY Examine the following pylon support components: a. Transmission link assemblies and bearings for damage and deterioration.
Page 92 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-22. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Ensure no sealant voids are visible around forward and aft nodal beam deck mounted supports and isolation mount. Recoat with sealant (C-308) as required. Chapter 63 MAIN DRIVESHAFT Inspect main driveshaft as follows:...
Page 93 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-22. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER GROUND RUN CAUTION G R O U N D R U N O F H E L I C O P T E R T O B E ACCOMPLISHED BY QUALIFIED PERSONNEL ONLY.
Page 95 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-23. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ZONE 4 —...
Page 96: 300-Hour Airframe Progressive Inspection - Event No. 3
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-23. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 71 Examine engine mount legs for condition and security. Pay particular attention for loose fasteners. Examine engine mount fittings for condition and security. Applicable Service Examine rotor brake (if installed) for condition and security.
Page 97 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-23. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 96 11. Perform operational check of all engine chip detectors. Chapter 95 12. Perform operational check of turbine outlet temperature system.
Page 98 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-23. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER e. Lower collective stick full down. f. Position N governor actuator to full DECREASE (extended). g. Verify for clearance between governor stop and lever stop arm.
Page 99 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-23. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Rolls-Royce 250-C30 c. Then proceed with Rolls-Royce engine fuel system Series Operation and purging procedure. Maintenance Manual, 14W2 Ensure air is purged from fuel filter head and check for fuel leaks during ground run.
Page 100 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-23. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 65 Torque check forward short shaft disc pack coupling fasteners 50 to 70 inch-pounds (5.7 to 7.9 Nm). For 206L3+ IGW Upgrade helicopters, torque check forward short shaft disc pack coupling fasteners 150 to 180 inch-pounds (16.9 to 20.3 Nm).
Page 101 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-24. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ZONE 5 —...
Page 102: 300-Hour Airframe Progressive Inspection - Event No. 4
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-24. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine oil cooler core for obstructions and cleanliness. Chapter 65 Examine oil cooler blower and housing for cleanliness, condition and security. Chapter 79 Examine oil tank for leakage, condition and security.
Page 103 Examine anti-chafing adhesive tape (C-460) on tailboom for condition. Replace worn or damaged tape as required. NOTE In the event that cracks are found, contact Bell Helicopter Textron, Product Support Engineering. Examine entire tailboom for the following conditions: a. Dents. NOTE Pay particular attention to the upper left side tailboom quadrant.
Page 104 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-24. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Pay particular attention to the rivets attaching the tail rotor gearbox support to the tailboom. BHT-206-SRM d. Loose rivets. Replace as required. Chapter 53 e.
Page 105 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-24. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 12 Lubricate tail rotor driveshaft hanger bearings. Examine and lubricate the aft tail rotor driveshaft splined adapter. Chapter 65 Examine segmented driveshafts and aft splined adapter for condition and security.
Page 106 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-24. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Lower control mechanism rod for condition of bearings. c. Pitch links and spherical bearings for condition and security. d.
Page 107: 300-Hour Airframe Progressive Inspection - Event No. 5
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-25. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 5 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ZONE 7 —...
Page 108 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-25. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 5 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine aft passenger seat bulkhead for distortion and/or cracks and indication of screw contact in the area of hat bin attachment nutplates.
Page 109 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-25. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 5 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Applicable Service b. Heater ducts (if installed) for chafing with controls. Instruction Chapter 95 c. Oil lines for leakage and general condition. Chapter 96 d.
Page 110 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-25. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 5 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 67 CONTROLS Examine the collective control stick for condition and security and minimum friction. Examine copilot collective control stick if installed.
Page 111 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-25. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 5 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER ZONE 8 — FORWARD FUSELAGE PLACARDS AND MARKINGS Chapter 11 Examine the placards, decals and markings. Ensure they are readable, correctly applied and in agreement with the applicable configuration of your helicopter.
Page 112 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-25. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 5 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER 10. Examine lower fuselage for indication of fuel leaks, dents, cracks, corrosion, delamination, loose or missing rivets, and condition. 11.
Page 113 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-25. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 5 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER GROUND RUN CAUTION G R O U N D R U N O F H E L I C O P T E R T O B E ACCOMPLISHED BY QUALIFIED PERSONNEL ONLY.
Page 115 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-26. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 6 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ZONE 9 —...
Page 116: 300-Hour Airframe Progressive Inspection - Event No. 6
BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-26. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 6 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 96 Verify operation of the baggage door ajar caution light, (if installed). FUSELAGE (INTERIOR) Chapter 53 Examine baggage compartment for condition. Gain access to inside of aft fuselage through access panels in baggage compartment and access panel located on the aft right hand fuselage:...
Page 117 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-26. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 6 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 96 and ELECTRICAL AND AVIONICS Chapter 97 Examine antennas for condition and security. Examine all components, electrical wiring, cables, and connectors for chafing, general condition, and security.
Page 118 BHT-206L3-MM-1 PROGRESSIVE INSPECTIONS 5-26. 300-HOUR AIRFRAME PROGRESSIVE INSPECTION — EVENT NO. 6 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine cabin entry steps for condition and security (if installed). Examine sealant joint at junction with skid tube saddles. Restore sealant (C-251) and paint finish as required.
Page 119: 300-Hour Airframe Periodic Inspection
BHT-206L3-MM-1 PERIODIC INSPECTION 5-27. 300-HOUR AIRFRAME PERIODIC INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MUCH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Do this inspection every 300 hours of operation or every 12 calendar months.
Page 121: 100-Hour Inspection
BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-28. 100-HOUR INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ NOTE 100-hour inspection must be accomplished when using the 300-hour airframe progressive inspection program or the 300-hour airframe periodic inspection program.
Page 122 Product Support Engineering for evaluation and possible repair. NOTE In the event that cracks are found during inspection of tailboom, contact Bell Helicopter Textron, Product Support Engineering. Examine tailbooms 206-033-004-045 and prior, modified in accordance with ASB 206L-87-47 as follows: a.
Page 123 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-28. 100-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (3) Area of double row of rivets, which attach tail rotor gearbox support fitting to tailboom (BS 174). d. Clean entire tailboom taking particular care to remove all grime and dirt in specified area of inspection and perform inspection using minimum 5X magnifying glass.
Page 124 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-28. 100-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER f. As applicable to tailbooms modified in accordance with ASB 206L-99-115, examine doubler around stabilizer on left side for integrity of sealant. Reseal as required. 5-00-00 Page 92 Rev.
Page 125 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-29. 300-HOUR INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ NOTE Every 300 hours of operation, the 300-hour inspection must be accomplished in conjunction with 100-hour airframe...
Page 126 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-29. 300-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 96 Examine electrical components behind hat bin for condition, security, and cleanliness. Chapter 53 Examine engine and transmission support structure for cracks, corrosion, or loose fasteners. CAUTION EXERCISE CARE AND USE ADEQUATE SCREW LE N G T H W H E N R E IN S TA L L IN G V E RT IC A L...
Page 127 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-29. 300-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 96 d. Wiring and electrical components for condition and security. Chapter 53 e. Structure for corrosion, cracks, and condition. CONTROLS Chapter 67 Verify minimum friction of collective control and readjust as required.
Page 128 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-29. 300-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER HYDRAULIC Chapter 12 Remove hydraulic pump and rotor tachometer generator. Chapter 29 Chapter 63 Examine hydraulic pump shaft splines rotor tachometer splines for excessive wear. Lubricate hydraulic pump...
Page 129 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-29. 300-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Replace airframe fuel filter element. Chapter 28 Purge airframe and engine fuel system as follows: a. Turn both fuel boost pumps ON. b. Depress airframe fuel filter bypass valve “press to test” button on fuel filter head until there is no evidence of air coming out of the lower fuel filter drain port and out of the fuel filter outlet supply line.
Page 130 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-29. 300-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Open engine compartment cowling. c. Using bright light and mirror, inspect exposed upper and lower edges of the joints and fastener between aluminum longeron and titanium engine pan. Edge of sealant coating should be visible.
Page 131 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-29. 300-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 65 TAIL ROTOR GEARBOX Torque check tail rotor gearbox retaining nuts 50 to 70 inch-pounds (5.6 to 7.9 Nm). TAIL ROTOR HUB AND BLADE ASSEMBLY Chapter 64 Check dynamic balance of tail rotor hub and blade assembly.
Page 133 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-30. 1000-HOUR INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ASB 206L-97-107 TAILBOOM NOTE This inspection is to be complied with in accordance with Part 1 of ASB 206L-97-107 every 1000 hours of tailboom operation, except as follows:...
Page 135 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-31. 1200-HOUR INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ NOTE This inspection must be accomplished every 1200 flight hours.
Page 136 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-31. 1200-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER If no crack is found, inspect cyclic stick tube for mechanical and corrosion damage as follows: a. Damaged and repaired areas must be separated by 1.0 inch (25 mm) minimum.
Page 137 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-31. 1200-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER TAILBOOM NOTE This inspection is to be complied with every 1200 hours of tailboom operation after compliance with ASB 206L-99-115, except as follows: The inspection is not required for tailbooms P/N 206-033-004-181/-199 and subsequent P/N 206-704-727-101 P/N 206-074-727-103...
Page 138 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-31. 1200-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER d. Inspect edge of doubler for delamination between skin and doubler. e. Inspect tailboom skin area up to 1.00 inch (25.40 mm) area around doubler for cracks. Using a 10X magnifying glass, perform a visual inspection of external right side of tailboom skin stabilizer cutout.
Page 139 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-31. 1200-HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-206L-CR&O b. If nylatron sleeves were worn through, exposing bare surface of control tube, and control tube is worn not in excess of 0.004 inch (0.10 mm) on one side only, replace worn nylatron sleeves.
Page 141 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-32. AS REQUIRED BY MANUFACTURER INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ENGINE Rolls-Royce 250-C30 Perform engine inspection requirements.
Page 143 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-33. WEEKLY 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 AND BLADES, AND TAIL ROTOR HUB Chapter 64 AND BLADES —...
Page 144 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-33. WEEKLY INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Do not allow preservative oil (C-125) to contact tail rotor blade bearings. Apply a light coat of preservative oil (C-125) to all hub and blade surfaces.
Page 145 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-34. 12-MONTH INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL Ensure that a 100 or 300-hour airframe progressive inspection (all four or six events, as applicable) or the 100 or 300-hour airframe periodic inspection has been completed in the last 12 calendar month period.
Page 147 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-35. 12 MONTHS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Chapter 62 MAIN ROTOR MAST BHT-206A/B/L-Series- CR&O...
Page 149 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-36. 24-MONTH INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ MAIN ROTOR FLIGHT CONTROL BOLTS/NUTS Remove main rotor flight control bolts/nuts (1 through 14, Figure 5-2).
Page 150 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-36. 24-MONTH INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER FUEL SYSTEM Chapter 28 Remove tuel boost pump assemblies and inspect fuel cell interiors for debris, water contamination, and fungus growth. Remove, clean, and inspect fuel manifold assembly. Remove, clean, and inspect inline fuel filters and check valves.
Page 151 BHT-206L3-MM-1 Figure 5-2. Inspection of Main Rotor Flight Control Bolts/Nuts (Sheet 1 of 2) 5-00-00 Export Classification C, ECCN EAR99 15 MAY 2015 Rev. 22 Page 119...
Page 152 BHT-206L3-MM-1 Figure 5-2. Inspection of Main Rotor Flight Control Bolts/Nuts (Sheet 2 of 2) 5-00-00 Page 120 Rev. 22 15 MAY 2015 Export Classification C, ECCN EAR99...
Page 153 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-37. 60-MONTH INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ BHT-206L3-MM FREEWHEEL ASSEMBLY BHT-206L-CR&O NOTE This inspection applies to 206L3+ IGW Upgrade helicopters equipped with freewheel assembly...
Page 155 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-38. 300-HOUR OR 12-MONTH INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ NOTE This inspection is only applicable when conducting the 100-hour airframe progressive or 100-hour airframe periodic inspection program.
Page 157 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-39. 600 HOURS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ TRANSMISSION NOTE This inspection...
Page 159 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-40. 600 HOURS OR 12 MONTHS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Chapter 63 MAIN DRIVESHAFT NOTE...
Page 161 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-41. 1200 HOURS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Chapter 63 FREEWHEEL ASSEMBLY (WITH CLUTCH CL41742-1) Chapter 63 Remove freewheel assembly.
Page 163: 1500 Hours Of Component Operation
BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-42. 1500 HOURS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Chapter 63 MAIN ROTOR MAST BHT-206A/B/L-Series- CR&O...
Page 164 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-42. 1500 HOURS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 63 Remove transmission. Remove mast assembly, oil filter, and housing assembly. Inspect oil filter for debris and metal contamination. BHT-206L-CR&O Remove top case, planetary, and sun gear. Perform a sun gear special inspection.
Page 165: 1500 Hours Of Component Operation And Every 50 Hours Thereafter
BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-43. 1500 HOURS OF COMPONENT OPERATION AND EVERY 50 HOURS THEREAFTER INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Chapter 62 SWASHPLATE SUPPORT 206-010-452-001/-005/-109...
Page 167: 2250 Hours Or 60 Months Of Component Operation
BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-44. 2250 HOURS OR 60 MONTHS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ TRANSMISSION NOTE This...
Page 168 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-44. 2250 HOURS OR 60 MONTHS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Insert a mirror between the spiral bevel gear edge and the lower case and use a bright light to examine the spiral bevel gear, input pinion gears, and surrounding areas for condition.
Page 169: 3000 Hours Of Component Operation
BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-45. 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:_______________ _ ________________________ BHT-206L-CR&O TAIL ROTOR GEARBOX NOTE This inspection may be accomplished concurrently...
Page 170 BHT-206L3-MM-1 SCHEDULED INSPECTIONS 5-45. 3000 HOURS OF COMPONENT OPERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Visually inspect accessible areas of input pinion duplex bearing, input pinion roller alignment bearing, and output shaft roller alignment bearing and race for roughness, spalling, scoring, pitting, flaking, broken or damaged retainers, and for evidence of overheating and corrosion.
Page 171 BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-46. SPECIAL INSPECTIONS • 1 to 5 hours after each installation • 3 to 8 hours after each installation Accomplish the following special inspections on the helicopter (paragraph 5-47 through paragraph 5-51): • 10 to 25 hours after each installation •...
Page 173: After Fuel System Maintenance And/Or Component Change
BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-47. AFTER FUEL SYSTEM MAINTENANCE AND/OR COMPONENT CHANGE INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ NOTE Accomplish immediately...
Page 174 BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-47. AFTER FUEL SYSTEM MAINTENANCE AND/OR COMPONENT CHANGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 12 a. Make sure all fuel has been drained from aft and forward fuel cells. b. Service fuel cell with 10 gallons (37.9 L) of fuel. BHT-206L3-FM-1 c.
Page 175 BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-47. AFTER FUEL SYSTEM MAINTENANCE AND/OR COMPONENT CHANGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Set throttle to full open and operate engine at 100% N for a minimum of 2 minutes with both fuel pumps OFF. If flameout or power loss occurs, refer to step 3.
Page 177: To 5 Hours After Each Installation
BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-48. 1 TO 5 HOURS AFTER EACH INSTALLATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ MAIN ROTOR Chapter 62 Torque check main rotor mast nut 250 to 275 foot-pounds...
Page 179: To 8 Hours After Each Installation
BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-49. 3 TO 8 HOURS AFTER EACH INSTALLATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ MAIN ROTOR BHT-206L-CR&O Torque...
Page 181: 10 To 25 Hours After Each Installation
BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-50. 10 TO 25 HOURS AFTER EACH INSTALLATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ SWASHPLATE ASSEMBLY Chapter 62 Check swashplate tilt friction.
Page 182 BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-50. 10 TO 25 HOURS AFTER EACH INSTALLATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 65 TAIL ROTOR GEARBOX Torque check tail rotor gearbox retaining nuts 50 to 70 inch-pounds (5.6 to 7.9 Nm). Repeat every 10 to 25 hours until torque has stabilized.
Page 183: 100 Hours After Each Installation
BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-51. 100 HOURS AFTER EACH INSTALLATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ POWER PLANT Chapter 71 Torque check engine mount attachment hardware at engine and airframe attachment points.
Page 184 BHT-206L3-MM-1 SPECIAL INSPECTIONS 5-51. 100 HOURS AFTER EACH INSTALLATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE If a nut is improperly torqued, remove and check tare torque, and replace as required. Recheck torque at next 100 hours. Check transmission top case stud nuts for torque.
Page 185: Conditional Inspections
BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-52. CONDITIONAL INSPECTIONS • Overspeed — Main rotor — 114% or greater • Overtorque Accomplish the applicable conditional inspections (paragraph 5-53 through paragraph 5-59) of the helicopter after the following: • Engine compressor stall or surge • Hard landing •...
Page 187: Hard Landing
Sudden Stoppage and must be returned to a Bell Helicopter Textron approved blade repair station for inspection. The airframe landing skids and crosstubes will deform and yield under load forces in excess of 2.5 G's. if the cabin fuselage contacts the ground, the G forces in the fuselage increase abruptly.
Page 188 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-53. HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Components removed from helicopter for inspection following a hard landing, shall be evaluated as an interrelated group. Removal records accompanying each component shall cross-reference part and serial numbers of other drive system components removed for evaluation.
Page 189 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-53. HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Perform a complete visual inspection of the flight control system from pilot controls to main rotor head for bent or damaged tubes, bellcranks, and supports, and for damaged bearings.
Page 190 14. If damage described in step 15 and/or step 16 is found, remove main rotor blades. Send main rotor blades to a Bell Helicopter Textron authorized blade repair facility for evaluation. BHT-206L-CR&O 15. If damage to fuselage structure, skid gear, or tailboom is...
Page 191 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-53. HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER e. Transmission and mast assembly. f. Main driveshaft assembly (grease lubricated). For 206L3+ IGW Upgrade helicopters, remove and discard the engine to transmission KAflex driveshaft. g.
Page 193: Sudden Stoppage/Acceleration
BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-54. SUDDEN STOPPAGE/ACCELERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ SUDDEN STOPPAGE/ACCELERATION — MAIN ROTOR Sudden stoppage/acceleration is defined as any rapid deceleration or acceleration of the drive system whether caused by seizure within the drive system, impact of the main rotor with...
Page 194 MECH OTHER After sudden stoppage of the main rotor, remove both main rotor blades. Send both blades to a Bell Helicopter Textron approved blade repair facility for evaluation. Remove the following components and visually inspect for evidence of torsional yielding, deformation, cracks, or other obvious damage that would render them non-repairable.
Page 195 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-54. SUDDEN STOPPAGE/ACCELERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER CAUTION IF MA IN ROTOR MA ST HA S E VID ENC E OF TORSIONAL YIELDING, THE MAST ASSEMBLY, TRANSMISSION ASSEMBLY, MAIN DRIVESHAFT, AND FREEWHEEL ASSEMBLY (OUTER RACE, I N N E R R A C E A N D C L U T C H ) S H A L L B E C O N S I D E R E D U N S E R V I C E A B L E...
Page 196 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-54. SUDDEN STOPPAGE/ACCELERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-206L-CR&O i. Inspect transmission restraint and transmission mount system for condition, and fuselage attachment points for cracks. BHT-206L-CR&O j. Inspect engine mounts at fuselage attachment points for cracks.
Page 197 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-54. SUDDEN STOPPAGE/ACCELERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Main rotor mast is sheared, power on or off. Mast shows indication of torsional yielding, out-of-round, or Total Indicated Runout (TIR) check exceeds limits. c.
Page 198 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-54. SUDDEN STOPPAGE/ACCELERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Components removed from helicopter for evaluation following a sudden stoppage/acceleration shall be evaluated as an interrelated group. Removal records accompanying each component shall cross-reference part and serial numbers of other drive system components removed for evaluation.
Page 199 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-54. SUDDEN STOPPAGE/ACCELERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE If tail rotor driveshaft failed as a result of torsional overload, hangers, driveshafts, adapters, impeller, and disc couplings shall be considered unserviceable scrapped. Inspect hanger attachment points for cracks and distortion.
Page 200 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-54. SUDDEN STOPPAGE/ACCELERATION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-206-SRM-1 10. Inspect tailboom internally for cracks, distortion, and loose or missing rivets. Check external skin of tailboom for cracks and waviness paying particular attention to area of horizontal stabilizer and attachment points of vertical fin.
Page 201: Overspeed Main Rotor - 114% Or Greater
BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-55. OVERSPEED MAIN ROTOR — 114% OR GREATER INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ OVERSPEED MAIN ROTOR —...
Page 202 0.0015 inch (0.0381 mm), remove blade from service and return it to a Bell Helicopter Textron approved major overhaul facility for further inspection. Any evident looseness of bushing is cause for scrapping blade.
Page 203 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-55. OVERSPEED MAIN ROTOR — 114% OR GREATER (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-206L-CR&O d. Overhaul the main rotor hub assembly in accordance with the Conditional Inspection criteria. BHT-206A/B/L-Series- e. Overhaul the tail rotor hub assembly. CR&O, Chapter 64 BHT-ALL-SPM f.
Page 205: Overtorque
(1) Main rotor blades and attachments. Blade for skin wrinkles and bond separation. If any indications of wrinkles or deformation exists, send blades to a Bell Helicopter Textron approved blade repair facility for evaluation. (2) Main rotor hub assembly.
Page 206 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-56. OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (3) Transmission top case. (4) Transmission mount fittings at upper attachment points and lower stop mounts. (5) Cabin roof and beam at transmission restraint support assembly attachment points. (6) Cabin roof and beam at nodal beam support attachment points.
Page 207 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-56. OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER After the first 25 hours following an overtorque, conduct a thorough visual inspection of the following: a. Main rotor blades and attachments. b. Main rotor hub assembly. c.
Page 208 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-56. OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE The overhaul inspection criteria in the specific sections, including limit charts and other pertinent information, should be used to establish that the detail parts in each assembly are dimensionally within limits and have not yielded or become deformed.
Page 209 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-56. OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER d. Transmission top case. e. Transmission spindles, pylon support links, and mount fittings. f. Cabin roof shell and beam at transmission mount attachment points. g. Transmission restraint attachment. h.
Page 211: Engine Compressor Stall Or Surge
BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-57. 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:_______________ _ ________________________ An engine compressor stall or surge can be described as a sharp rumble, a series of loud sharp pops, severe engine vibration, or a rapid rise in Turbine Outlet Temperature (TOT) depending on the severity of stall or surge.
Page 212 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-57. ENGINE COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER PART I: INVESTIGATE CAUSE OF COMPRESSOR STALL OR SURGE POWER PLANT Rolls-Royce 250-C30 Examine the induction fairing for blockage. If the induction Series Operation and fairing is found obstructed, refer to appropriate Rolls-Royce Maintenance Manual,...
Page 213 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-57. ENGINE COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Removal or dismantling of components is not required while performing the following inspection. PART II: INSPECTION FOR COMPRESSOR STALL OR Chapter 63 Chapter 65 SURGE WITHOUT NOTICEABLE YAW DRIVE SYSTEM...
Page 214 Service Record and attach a tag on the tail rotor blade(s) and write "THIS BLADE WAS REMOVED FROM SERVICE BECAUSE OF A COMPRESSOR STALL OR SURGE". Send the tail rotor blade(s) assembly to a Bell Helicopter Textron approved rotor blade repair facility for further inspection and repair.
Page 215 REMOVED FROM SERVICE BECAUSE COMPRESSOR STALL/SURGE." Send the blade(s) to a Bell Helicopter Textron approved rotor blade repair facility for further inspection and repair. If no defects were detected on any blade, the blade(s) are serviceable. NOTE This inspection does not require disassembly or removal from the helicopter.
Page 216 Historical Service Record and attached a tag on the driveshaft and write, “THIS COMPONENT WAS REMOVED FORM SERVICE BECAUSE OF A COMPRESSOR STALL”. Send the driveshaft to Bell Helicopter Textron CPR for evaluation. defects were...
Page 217 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-57. ENGINE COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER TRANSMISSION ASSEMBLY BHT-206L-CR&O Remove the transmission input pinion and triplex bearing. Inspect the following gear teeth for scoring and other mechanical damage. a.
Page 218 Historical Service Record and attach a tag and write, “THIS COMPONENT WAS REMOVED FROM SERVICE BECAUSE OF A COMPRESSOR STALL/SURGE”. Send the component to a Bell Helicopter Textron approved facility for overhaul. If no metal particles were found, the transmission assembly, freewheel assembly, and/or tail rotor gearbox are serviceable.
Page 219: Lightning Strike
BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-58. LIGHTNING STRIKE INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ NOTE This inspection must accomplished after helicopter is suspected of receiving a lightning strike.
Page 220 Inspect main rotor blades. Blades that exhibit severe arcing shall be scrapped. Blades that exhibit light to moderate arcing shall be returned to a Bell Helicopter Textron approved blade repair facility for evaluation. (1) Inspect blades for signs of burns and arcing at tip cap, root end closure, buffer pads, and blade bolt bushings.
Page 221 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-58. LIGHTNING STRIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER e. Inspect nodal beam, transmission mount fittings, and engine mounts. BHT-206L-CR&O (1) Visually inspect exterior surfaces for evidence of arcing or burning. Special attention should be given to contact surfaces of transmission and engine to their mounting systems, and of mounting systems to the airframe.
Page 222 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-58. LIGHTNING STRIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (2) Visually check pitch horns and trunnion bearing connections for arcing burns. BHT-206L-CR&O (3) If indications of arcing or burning are present, overhaul main rotor hub assembly and scrap pitch links and all attaching hardware.
Page 223 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-58. LIGHTNING STRIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER d. Inspect nodal beam, transmission mount fittings, and engine mounts. (1) Visually inspect exterior surfaces for evidence of arcing or burning. Special attention should be given to contact surfaces of transmission and engine to their mounting systems, and of mounting systems to the airframe.
Page 224 BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-58. LIGHTNING STRIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-206L-CR&O g. Disassemble swashplate support assembly. Visually inspect for evidence of burning or arcing. Inspect bearings for smooth rotation and all hardware for evidence of arcing.
Page 225: Engine Overtemp
BHT-206L3-MM-1 CONDITIONAL INSPECTIONS 5-59. ENGINE OVERTEMP INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ ENGINE OVERTEMP — Inspect. Rolls-Royce 250-C30P Perform hot end inspection of power plant assembly if start or Series Operation and...
Page 227: Component Overhaul Schedule
BHT-206L3-MM-1 COMPONENT OVERHAUL SCHEDULE 5-60. COMPONENT OVERHAUL SCHEDULE CAUTION The Component Overhaul Schedule (Table 5-4) 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 WARNING A P P L I C A B L E S E R V I C E...
Page 228 BHT-206L3-MM-1 Table 5-4. Component Overhaul Schedule (Cont) OVERHAUL INTERVAL NOMENCLATURE PART NUMBER (HOURS) POWER TRAIN Transmission Assembly 206-706-045-103/-107/-111 3000 hours Transmission Assembly 206-040-004-101 4500 hours Main Rotor Mast Assembly 206-040-014-101 3000 hours Freewheel Assembly 206-040-270-009 2400 hours Freewheel Assembly 206-040-270-009 3000 hours Input Driveshaft 206-340-300-101/-105...
Page 229 As applicable to 206L3+ IGW Upgrade Kit (BHT-206-SI-2052), input driveshafts 206-340-300-101/-105 must be overhauled at 5000 hours of operation and every 2500 hours of operation thereafter. Overhaul is to be accomplished by Kamatics Corporation only. Return driveshaft to Bell Helicopter Textron (BHT) per Information Letter (IL) GEN-04-98.

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