BELL HELICOPTER 430 Maintenance Manual
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BELL HELICOPTER 430 Maintenance Manual

Volume 2: handling and servicing
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HANDLING AND SERVICING
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.
COPYRIGHT NOTICE
COPYRIGHT
2012
BELL ® HELICOPTER TEXTRON INC.
AND BELL HELICOPTER TEXTRON
CANADA LTD.
ALL RIGHTS RESERVED
MAINTENANCE MANUAL
VOLUME 2
NOTICE
REISSUE — 30 JUNE 1999
REVISION 19 — 1 NOVEMBER 2012
BHT-430-MM-2

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Summary of Contents for BELL HELICOPTER 430

  • 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-430-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-430-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 Product Support Engineering (PSE) is just a phone call away and may be contacted as follows: Model 206 or 407 Phone: 450-437-2862 or 800-363-8023 (U.S./Canada) Fax: 450-433-0272 E-mail: pselight@bh.com Model 222, 230, 427, 429, or 430 Phone: 450-437-2077 or 800-463-3036 (U.S./Canada) Fax: 450-433-0272 E-mail: pseinter@bh.com Model 204, 205, 212, or 412 Phone: 450-437-6201 or 800-363-8028 (U.S./Canada)
  • 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 VIA FAX TO PRODUCT SUPPORT ENGINEERING (450) 433-0272, 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: Your Name: Address:...
  • 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 IMPORTANT HELICOPTER SALES NOTICE Please complete this form and return by mail, e-mail (publications@bh.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 _________________________________________________ Name of New Owner (company or individual) ______________________________________ Name of New Operator _______________________________________________________...
  • 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-430-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...
  • Page 13 TC APPROVED BHT-430-MM-2 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 Main Rotor Yoke — 100-Hour and 600-Hour Inspection ........
  • Page 14 BHT-430-MM-2 TC APPROVED REVISION NO. DATE OF SIGNATURE APPROVAL SIGNATURE Original 15 July 1996 30 October 1996 Reissue 16 April 1997 Reissue 6 July 1999 15 October 1999 10 December 1999 15 December 1999 7 January 2000 1 July 2000...
  • Page 15 TC APPROVED BHT-430-MM-2 REVISION NO. DATE OF SIGNATURE APPROVAL SIGNATURE 2 February 2005 25 October 2005 1 May 2006 21 June 2006 15 December 2006 26 January 2007 9 January 2008 1 September 2009 9 September 2011 1 November 2012 4-00-00 1 NOV 2012 Rev.
  • Page 17 OR APPROVED BY PARTIES OTHER maintenance actions are to be performed. THAN BELL HELICOPTER ARE USED, T H E N T H E D A T A P U B L I S H E D O R NOTE O T H E R W I S E S U P P L I E D B Y B E L L HELICOPTER ARE NOT APPLICABLE.
  • Page 18 CAUTION The airworthiness lives given to the components and assemblies are determined by experience, tests, and the judgment of Bell Helicopter engineers. The lives AIRWORTHINESS LIFE OF SOME KIT cannot be changed without the approval of the COMPONENTS IS NOT COVERED IN Minister of Transport Canada.
  • Page 19 TC APPROVED BHT-430-MM-2 Table 4-1. Airworthiness Limitations Schedule (Cont) COMPONENT PART NUMBER AIRWORTHINESS LIFE MAIN ROTOR CONTROLS Main Rotor Pitch Link Assembly 430-010-411-105/-107 10,000 Drive Hub Assembly 430-010-410-101 10,000 Drive Idler Link Assembly 430-010-409-105 10,000 Drive Link Assembly 430-010-408-101 10,000...
  • Page 20 BHT-430-MM-2 TC APPROVED Table 4-1. Airworthiness Limitations Schedule (Cont) COMPONENT PART NUMBER AIRWORTHINESS LIFE CONTROL SYSTEM BOLTS AND PINS (CONT) Cyclic Lever to Actuator Bolt 50-047C8-31 5000 Collective Lever to Idler Link Bolt 50-047C8-135 5000 Idler Link to Swashplate Support Bolt...
  • Page 21 Cartridge shall be replaced upon reaching 6 years from date of manufacture. Life begins at the manufacture date/first hydrostatic test date as marked on reservoir. Pylon mounts 430-310-200-103, -105 and -107 are subject to airworthiness inspection limitations (Table 4-2).
  • Page 22 3.0 inches (76.19 mm). Refer to Figure 4-1. Refer to Figure 4-3 for inspection details. This inspection does not apply to pylon fluid mount 430-310-200-107. Refer to Figure 4-4 for inspection details. Refer to Figure 4-5 for inspection details.
  • Page 23 Inspect surfaces for spanwise crack damage between yoke stations 23.0 and 31.0. Inspection applies to yokes with cracks. Inspection is limited to arm that has crack(s). Refer to BHT-430-CR&O-2 (Chapter 62) for damage criteria. 430_MM_04_0001 Figure 4-1. Main Rotor Yoke — 100-Hour and 600-Hour Inspection...
  • Page 24 BHT-430-MM-2 TC APPROVED Figure 4-2. Main Rotor Yoke Edges — Inspection 4-00-00 Page 12 Rev. 19 1 NOV 2012 ECCN EAR99...
  • Page 25 TC APPROVED BHT-430-MM-2 Figure 4-3. Pylon Fluid Mount — Inspection 4-00-00 ECCN EAR99 1 NOV 2012 Rev. 19 Page 13...
  • Page 26 BHT-430-MM-2 TC APPROVED Refer to BHT-430-CR&O (Chapter 62) for inspection and damage criteria. Remove main rotor yoke. Clean main rotor yoke. Perform a detail visual inspection of the entire yoke for evidence of cracking, delamination and damage. Specific attention should be applied to the shaded areas.
  • Page 27 TC APPROVED BHT-430-MM-2 Figure 4-5. Main Rotor Blade — Inspection 4-00-00 ECCN EAR99 1 NOV 2012 Rev. 19 Page 15...
  • Page 28 BHT-430-MM-2 TC APPROVED Figure 4-6. Pylon Fluid Mount — Torque Shear Pad Bolt Replacement 4-00-00 Page 16 Rev. 19 1 NOV 2012 ECCN EAR99...
  • Page 29 BHT-430-MM-2 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 in the Inspections ........5-00-00 Crash Damage................5-00-00 Types of Inspections..............5-00-00 Definitions .................
  • Page 30 BHT-430-MM-2 TABLE OF CONTENTS (CONT) Paragraph Chapter/Section Page Number Title Number Number SPECIAL INSPECTIONS 5-39 Special Inspections ................ 5-00-00 5-40 After Every Main Rotor Blade Removal ......... 5-00-00 5-41 After 1 to 5 Hours of Operation Following Each Installation ..
  • Page 31 FAILURE TO CORRECT CONDITIONS manuals. Bell Helicopter Textron considers that it is S U C H A S , B U T N O T L I M I T E D T O ,...
  • Page 32 Because of the many possible combinations that can result from crash damage, it is not possible to include For the common Bell Helicopter Textron approved the specified repair schemes in this category. The optional equipment that is integrated into this...
  • Page 33 The engineering aspects of this change are approved. The program is inspecting, examining system closely monitored by Bell Helicopter Textron in an component. operational environment with selected operators. • Non scheduled inspection — An inspection that has not been scheduled.
  • Page 34 BHT-430-MM-2 Left engine Right engine Left forward fuselage Right forward fuselage Left aft fuselage Right aft fuselage Left pylon Right pylon Main rotor F2 F1 Tail rotor Left tailboom Right tailboom Left wing Right wing 430_MM_05_0001 Figure 5-1. Maintenance Zones...
  • Page 35 BHT-430-MM-2 The Bell Helicopter Textron approved tolerance for NOTE scheduled inspections, special inspections, interim inspections, and overhaul intervals, unless otherwise The following is only applicable for those stated, is 10% or up to a maximum of 100 hours operators whose...
  • Page 37 5-8. SCHEDULED AIRFRAME INSPECTIONS Bell Helicopter Textron developed two scheduled airframe inspection programs to give flexibility for maximum helicopter use. An operator can choose one of the Bell programs or design their own program. The...
  • Page 38 BHT-430-MM-2 5-12. SCHEDULED COMPONENT INSPECTION Scheduled component inspections have been established for those items to be inspected at intervals other than those established for aircraft periodic inspections. Do the scheduled component inspections at every interval that follows. • 100 hours •...
  • Page 39 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-13. 50 HOUR INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ To be performed every 50 hours of operating time or a minimum of once every 12 months, whichever comes first.
  • Page 40 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-13. 50 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Rolls-Royce Do the applicable engine inspection. 250-C40B Operation and Maintenance Manual, Publication CSP 21000 Chapter 12 Lubricate the helicopter as necessary. DETAIL: Chapter 53 Examine the outside of the airframe and the tailboom assembly for cracks and other damage.
  • Page 41 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-13. 50 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine the battery for cracks, electrolyte leaks and corrosion. (F4) Chapter 29 and Examine the cyclic and collective control actuators for worn BHT-430-CR&O-4 bearings. Make sure they are correctly attached to the actuator support.
  • Page 42 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-13. 50 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER 16. Examine the main rotor adapter assemblies for evidence of contact between the adapter pads and the yoke assembly. (R1) 17. If evidence of contact is found in...
  • Page 43 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-14. 150 HOUR INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ To be performed every 150 hours of operating time or a minimum of once every 12 months, whichever comes first.
  • Page 44 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-14. 150 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 25 Examine the safety belts and shoulder harnesses for deterioration. Make sure they are correctly attached to the airframe structure. (F1/F2/F3/F4) Chapter 53 Examine the crew doors, passenger doors and baggage compartment doors for damage or corrosion.
  • Page 45 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-14. 150 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Examine inspection window(s) and sight glass(es) for cracking and discoloration. If either of these conditions are present the part must be removed and replaced prior to returning helicopter for service.
  • Page 46 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. If any defects are found, contact Bell Helicopter Product Support Engineering for instructions. Chapter 62 18. Examine the damper blade sets and the shear restraints elastomer for delamination, wear (crumbling) or damage.
  • Page 47 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-14. 150 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Examine inspection window(s) and sight glass(es) for cracking and discoloration. If either of these conditions are present the part must be removed and replaced prior to returning helicopter for service.
  • Page 48 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-14. 150 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 71 31. Examine all of the firewalls and fire shields for cracks, distortion, loose or missing rivets, broken spot welds and deterioration of the seals and sealant. (E1/E2) Chapter 71 32.
  • Page 49 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-14. 150 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER 40. Remove the access panel from the aft electrical compartment. Examine the condition of the electrical and avionics components and make sure they are correctly attached.
  • Page 50 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-14. 150 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 47. Examine the top and bottom surfaces of the horizontal stabilizer for cracks in the area adjacent to the stabilizer support. (T1/T2) Chapter 53 48.
  • Page 51 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-14. 150 HOUR INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 64 53. Inspect tail rotor pitch control assembly as follows: a. Check for excessive radial play between the pitch control assembly and the tail rotor gearbox output shaft due to a worn or debonded guide bearing.
  • Page 52 Chapter 79 and 60. Examine the right oil cooler blower for blockage, BHT-430-CR&O-V.2 cleanliness and damage. Make sure it is correctly attached. (E2) Rolls-Royce 61. Start the helicopter (BHT-430-FM-1) and do a FADEC 250-C40B Operation manual mode check. and Maintenance Manual, Publication...
  • Page 53 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-15. 600 HOUR/ANNUAL INSPECTION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ To be performed every 600 hours of operating time or a minimum of once every 12 months, whichever comes first.
  • Page 54 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-15. 600 HOUR/ANNUAL INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 29 c. Examine the directional control actuator for leaks. Make sure it is correctly attached. d. Examine the FS 340.00 bulkhead structure for distortion or cracks in the area where directional control actuator attaches.
  • Page 55 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-15. 600 HOUR/ANNUAL INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 Inspect horizontal stabilizer center area as follows: a. Remove upper support assembly. Save attaching hardware. b. Clean upper surface of stabilizer. NOTE Surface must be free of all dirt and residue.
  • Page 56 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-15. 600 HOUR/ANNUAL INSPECTION (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 65 b. Make sure the tail rotor splined adapter nut has the correct torque. BHT-430-CR&O-3 13. Make sure that the tail rotor blades attaching bolts/nuts have the correct torque.
  • Page 57 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-16. PROGRESSIVE INSPECTION — EVENT 1 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 58 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-16. PROGRESSIVE INSPECTION — EVENT 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 29 and Remove the access panel from the bottom of the aft Chapter 67 fuselage. Examine the bellcrank and directional control hydraulic actuator supports for corrosion and mechanical damage.
  • Page 59 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-16. PROGRESSIVE INSPECTION — EVENT 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 11. Examine the top and bottom surfaces of the horizontal stabilizer for cracks in the area adjacent to the stabilizer support.
  • Page 60 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-16. PROGRESSIVE INSPECTION — EVENT 1 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 64 17. Inspect tail rotor pitch control assembly as follows: a. Check for excessive radial play between the pitch control assembly and the tail rotor gearbox output shaft due to a worn or debonded guide bearing.
  • Page 61 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-17. PROGRESSIVE INSPECTION — EVENT 2 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 62 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-17. PROGRESSIVE INSPECTION — EVENT 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 63 Remove the transmission chip detectors. Clean and examine the chip detectors. Install the chip detectors. (F5/F6) Chapter 63 Examine the left longitudinal restraint spring and support for damage.
  • Page 63 Clean the yoke center sections. b. Do a careful visual inspection of the yoke center sections for delamination and damage. c. If any defects are found, contact Bell Helicopter Product Support Engineering for instructions. Chapter 62 16. Examine the damper blade sets and the shear restraints elastomer for delamination, wear (crumbling) or damage.
  • Page 64 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-17. PROGRESSIVE INSPECTION — EVENT 2 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER 19. If the helicopter has retractable landing gear, examine the landing gear as follows: (F1/F2/F3/F4) Chapter 12 a. Examine the nose gear centering actuator for correct pressure.
  • Page 65 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-18. PROGRESSIVE INSPECTION — EVENT 3 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Paragraph 5-13 GENERAL: Do a complete 50 hour inspection.
  • Page 66 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-18. PROGRESSIVE INSPECTION — EVENT 3 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 25 Examine the crew seat attenuation indicators. (F1/F2) Chapter 25 Examine the safety belts and shoulder harnesses for deterioration. Make sure they are correctly attached to the airframe structure.
  • Page 67 Chapter 79 and 22. Examine the right oil cooler blower for blockage, BHT-430-CR&O-V.2 cleanliness and damage. Make sure it is correctly attached. (E2) Rolls-Royce 23. Start the helicopter (BHT-430-FM-1) and do a FADEC 250-C40B Operation manual mode check. and Maintenance Manual, Publication...
  • Page 69 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-19. PROGRESSIVE INSPECTION — EVENT 4 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Paragraph 5-13 GENERAL: Do a complete 50 hour inspection.
  • Page 70 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-19. PROGRESSIVE INSPECTION — EVENT 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 29 and Remove the access panel from the bottom of the aft Chapter 67 fuselage. Examine the bellcrank and directional control hydraulic actuator supports for corrosion and mechanical damage.
  • Page 71 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-19. PROGRESSIVE INSPECTION — EVENT 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 11. Examine the top and bottom surfaces of the horizontal stabilizer for cracks in the area adjacent to the stabilizer support.
  • Page 72 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-19. PROGRESSIVE INSPECTION — EVENT 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER CAUTION RE F E R TO C HA PT E R 53 , TA B LE 53 - 1 F O R CORRECT TORQUE.
  • Page 73 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-19. PROGRESSIVE INSPECTION — EVENT 4 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER d. Check for rough or worn counterweight bellcrank bearings. e. Check for worn inner race in the tail rotor idler assembly. f. Check for unbonded bearing in the upper leg of tail rotor input lever assembly.
  • Page 75 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-20. PROGRESSIVE INSPECTION — EVENT 5 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 76 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-20. PROGRESSIVE INSPECTION — EVENT 5 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 63 Remove the transmission chip detectors. Clean and examine the chip detectors. Install the chip detectors. (F5/F6) Chapter 63 Examine the left longitudinal restraint spring and support for damage.
  • Page 77 Clean the yoke center sections. b. Do a careful visual inspection of the yoke center sections for delamination and damage. c. If any defects are found, contact Bell Helicopter Product Support Engineering for instructions. Chapter 62 16. Examine the damper blade sets and the shear restraints elastomer for delamination, wear (crumbling) or damage.
  • Page 78 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-20. PROGRESSIVE INSPECTION — EVENT 5 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Examine inspection window(s) and sight glass(es) for cracking and discoloration. If either of these conditions are present the part must be removed and replaced prior to returning helicopter for service.
  • Page 79 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-21. PROGRESSIVE INSPECTION — EVENT 6 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 80 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-21. PROGRESSIVE INSPECTION — EVENT 6 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 25 Examine the crew seat attenuation indicators. (F1/F2) Chapter 25 Examine the safety belts and shoulder harnesses for deterioration. Make sure they are correctly attached to the airframe structure.
  • Page 81 Chapter 79 and 22. Examine the right oil cooler blower for blockage, BHT-430-CR&O-V.2 cleanliness and damage. Make sure it is correctly attached. (E2) Rolls-Royce 23. Start the helicopter (BHT-430-FM-1) and do a FADEC 250-C40B Operation manual mode check. and Maintenance Manual, Publication...
  • Page 83 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-22. PROGRESSIVE INSPECTION — EVENT 7 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 84 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-22. PROGRESSIVE INSPECTION — EVENT 7 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 29 and Remove the access panel from the bottom of the aft Chapter 67 fuselage. Examine the bellcrank and directional control hydraulic actuator supports for corrosion and mechanical damage.
  • Page 85 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-22. PROGRESSIVE INSPECTION — EVENT 7 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 65 10. Disconnect the tail rotor driveshaft from the transmission and tail rotor gearbox. Examine each tail rotor driveshaft hanger assembly as follows: (T1/T2) a.
  • Page 86 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-22. PROGRESSIVE INSPECTION — EVENT 7 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 16. Remove baggage compartment floor and examine the following: a. Examine surrounding fuselage structure corrosion and damage. b. Examine wiring bundles for chafing. Make sure they are correctly attached.
  • Page 87 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-22. PROGRESSIVE INSPECTION — EVENT 7 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 64 21. Inspect tail rotor pitch control assembly as follows: a. Check for excessive radial play between the pitch control assembly and the tail rotor gearbox output shaft due to a worn or debonded guide bearing.
  • Page 89 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-23. PROGRESSIVE INSPECTION — EVENT 8 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 90 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-23. PROGRESSIVE INSPECTION — EVENT 8 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 63 Remove the transmission chip detectors. Clean and examine the chip detectors. Install the chip detectors. (F5/F6) Chapter 63 Examine the left longitudinal restraint spring and support for damage.
  • Page 91 Clean the yoke center sections. b. Do a careful visual inspection of the yoke center sections for delamination and damage. c. If any defects are found, contact Bell Helicopter Product Support Engineering for instructions. Chapter 62 16. Examine the damper blade sets and the shear restraints elastomer for delamination, wear (crumbling) or damage.
  • Page 92 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-23. PROGRESSIVE INSPECTION — EVENT 8 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Examine inspection window(s) and sight glass(es) for cracking and discoloration. If either of these conditions are present the part must be removed and replaced prior to returning helicopter for service.
  • Page 93 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-24. PROGRESSIVE INSPECTION — EVENT 9 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 94 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-24. PROGRESSIVE INSPECTION — EVENT 9 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 67 Measure the amount of minimum friction on the cyclic stick, collective stick and the tail rotor pedals. Adjust the minimum friction as necessary.
  • Page 95 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-24. PROGRESSIVE INSPECTION — EVENT 9 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER CAUTION THE INGESTION OF BROKEN INLET SCREEN SEGMENTS CAN CAUSE FOREIGN OBJECT D A M A G E TO T H E E N G I N E C O M P R E S S O R SECTION.
  • Page 96 Chapter 79 and 25. Examine the right oil cooler blower for blockage, BHT-430-CR&O-V.2 cleanliness and damage. Make sure it is correctly attached. (E2) Rolls-Royce 26. Start the helicopter (BHT-430-FM-1) and do a FADEC 250-C40B Operation manual mode check. and Maintenance Manual, Publication...
  • Page 97 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-25. PROGRESSIVE INSPECTION — EVENT 10 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. ______________________ FACILITY: _________________ _ _________________________ HELICOPTER S/N: __________ _ _________________________ REGISTRY NO.: ____________ _ _________________________ TOTAL TIME:________________________________________ SIGNATURE:_______________ _ _________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 98 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-25. PROGRESSIVE INSPECTION — EVENT 10 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 29 and Remove the access panel from the bottom of the aft Chapter 67 fuselage. Examine the bellcrank and directional control hydraulic actuator supports for corrosion and mechanical damage.
  • Page 99 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-25. PROGRESSIVE INSPECTION — EVENT 10 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 53 11. Examine the top and bottom surfaces of the horizontal stabilizer for cracks in the area adjacent to the stabilizer support.
  • Page 100 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-25. PROGRESSIVE INSPECTION — EVENT 10 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Check for worn areas on the tail rotor gearbox output shaft wear sleeve. c. Check for worn or rough crosshead bearing set.
  • Page 101 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-26. PROGRESSIVE INSPECTION — EVENT 11 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 102 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-26. PROGRESSIVE INSPECTION — EVENT 11 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE Examine inspection window(s) and sight glass(es) for cracking and discoloration. If either of these conditions are present the part must be removed and replaced prior to returning helicopter for service.
  • Page 103 Clean the yoke center sections. b. Do a careful visual inspection of the yoke center sections for delamination and damage. c. If any defects are found, contact Bell Helicopter Product Support Engineering for instructions. Chapter 62 17. Examine the damper blade sets and the shear restraints elastomer for delamination, wear (crumbling) or damage.
  • Page 104 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-26. PROGRESSIVE INSPECTION — EVENT 11 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 67 and 19. Examine the cyclic and collective shaft assemblies and BHT-ALL-SPM control tubes installed on the roof for loose bearings, wear, corrosion or mechanical damage.
  • Page 105 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-27. PROGRESSIVE INSPECTION — EVENT 12 INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ GENERAL: Paragraph 5-13 Do a complete 50 hour inspection.
  • Page 106 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-27. PROGRESSIVE INSPECTION — EVENT 12 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Chapter 25 and Remove the interior trim around the emergency exit Chapter 52 windows in the passenger doors. Examine the emergency exit...
  • Page 107 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-27. PROGRESSIVE INSPECTION — EVENT 12 (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER CAUTION THE INGESTION OF BROKEN INLET SCREEN SEGMENTS CAN CAUSE FOREIGN OBJECT D A M A G E TO T H E E N G I N E C O M P R E S S O R SECTION.
  • Page 108 Chapter 79 and 24. Examine the right oil cooler blower for blockage, BHT-430-CR&O-V.2 cleanliness and damage. Make sure it is correctly attached. (E2) Rolls-Royce 25. Start the helicopter (BHT-430-FM-1) and do a FADEC 250-C40B Operation manual mode check. and Maintenance Manual, Publication...
  • Page 109 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-28. EVERY 100 HOURS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ SWASHPLATE CONTROLS Examine the swashplate assembly.
  • Page 110 Examine the main rotor yokes as follows: (R1) Chapter 62 a. Clean the yoke(s). b. Do a visual inspection of the yokes for cracks. c. Refer to BHT-430-CR&O-2, Chapter 62 for damage criteria. 5-00-00 Page 80 Rev. 19 1 NOV 2012...
  • Page 111 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-29. EVERY 300 HOURS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________...
  • Page 112 NOTE This inspection does not apply to 430-010-400-103 swashplate configuration with single piece bearing sets and non-splitted ball sleeve guide bearings. BHT-430-CR&O-2 h. Examine the area around the upper and lower ball sleeve bearing sets for signs of fretting /rotation.
  • Page 113 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-30. EVERY 600 HOURS OR 6 MONTHS OF COMPONENT OPERATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________...
  • Page 115 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-31. EVERY 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:_______________________________________...
  • Page 117 This inspection applies part numbers 430-310-200-103 and 430-310-200-105. This inspection does not apply to part number 430-310-200-107. Examine the left pylon fluid mount as follows: (F5) a. Remove the left pylon fluid mount. 5-00-00 26 JAN 2007 Rev. 15...
  • Page 118 Examine the main rotor yokes as follows: (R1) Chapter 62 a. Clean the yoke(s). b. Do a visual inspection of the yokes for cracks. c. Refer to BHT-430-CR&O-2, Chapter 62 for damage criteria. 5-00-00 Page 88 Rev. 19 1 NOV 2012...
  • Page 119 (F6) SWASHPLATE ASSEMBLY Inspect the swashplate collective lever bushings P/N 430-010-423 and cyclic pivot pins P/N 430-310-455 as follows: Chapter 62 a. Remove left and right cyclic lever assemblies P/N 430-010-406 from the swashplate assembly.
  • Page 120 Chapter 62 e. If the pins and bushings are suitable for return to service, reinstall the left and right cyclic lever assemblies P/N 430-010-406 on the swashplate assembly. 5-00-00 Page 90 Rev. 15 26 JAN 2007...
  • Page 121 Remove the main rotor blades. b. Clean the main rotor blades. c. Do a visual inspection of the main rotor blades for delamination and damage. d. If any defect is found, contact Bell Helicopter Product Support Engineering for instructions. MAIN ROTOR YOKES Chapter 4...
  • Page 122 INSPECTION TASK DESCRIPTION MECH OTHER b. Do a visual inspection of the yokes for cracks, delamination, and impact damage. BHT-430-CR&O-2 c. If any defect is found, refer to BHT-430-CR&O-2 (Chapter 62) for damage criteria. PYLON SYSTEM Chapter 4 NOTE Step 1 is an airworthiness inspection limitation.
  • Page 123 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-35. EVERY 6 MONTHS INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ STANDBY ATTITUDE INDICATOR Chapter 95 Test the pilot standby attitude indicator power supply.
  • Page 125 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-36. EVERY 2 CALENDAR YEARS INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ SWASHPLATE AND CONTROLS...
  • Page 126 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-36. EVERY 2 CALENDAR YEARS (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (8) Remove two bolts from the stationary ring to cyclic link. (9) Remove two bolts from the cyclic link to cyclic lever. (10) Remove two bolts from the cyclic lever to servo.
  • Page 127 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-36. EVERY 2 CALENDAR YEARS (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Inspect external surface of mast, mast flange, and upper spline area for wear, damage, and corrosion. d. Reassemble main rotor hub assembly.
  • Page 128 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-36. EVERY 2 CALENDAR YEARS (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER CAUTION RE F E R TO C H APTE R 5 3 , TA B L E 53 - 1 F O R CORRECT TORQUE.
  • Page 129 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-37. EVERY 3 CALENDAR YEARS INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ EMERGENCY FLOTATION SYSTEM...
  • Page 131 BHT-430-MM-2 SCHEDULED INSPECTIONS 5-38. EVERY 5 CALENDAR YEARS INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ FIRE EXTINGUISHER RESERVOIR...
  • Page 133 BHT-430-MM-2 SPECIAL INSPECTIONS 5-39. SPECIAL INSPECTIONS Vertical Fin — After 5 to 10 hours of operation following each installation Special inspections are one-time inspections which must be performed at specific times following certain Tail Rotor Hub and Blades — After 5 to 10 maintenance actions.
  • Page 135 Clean the yokes. b. Do a careful visual inspection of the yokes for cracks, delamination and impact damage. BHT-430-CR&O-2 c. If any defect is found, refer to BHT-430-CR&O-2 (Chapter 62) for damage criteria. 5-00-00 26 JAN 2007 Rev. 15...
  • Page 137 BHT-430-MM-2 SPECIAL INSPECTIONS 5-41. AFTER 1 TO 5 HOURS OF OPERATION FOLLOWING EACH INSTALLATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________...
  • Page 139 BHT-430-MM-2 SPECIAL INSPECTIONS 5-42. AFTER 5 TO 10 HOURS OF OPERATION FOLLOWING EACH INSTALLATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________...
  • Page 141 BHT-430-MM-2 SPECIAL INSPECTIONS 5-43. AFTER 25 HOURS OF OPERATION FOLLOWING EACH INSTALLATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________...
  • Page 143 BHT-430-MM-2 SPECIAL INSPECTIONS 5-44. AFTER 100 HOURS OF OPERATION FOLLOWING EACH INSTALLATION INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________...
  • Page 145 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-45. CONDITIONAL INSPECTIONS Evaluate the components that you remove from the helicopter as a result of a conditional inspection as an interrelated group. The removal records that go with Conditional inspections are unscheduled inspections each component must cross-reference the part and...
  • Page 147 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-46. HARD LANDING INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ A hard landing is any incident or accident in which the helicopter impacts the ground hard enough to cause severe pitch movement of the main rotor.
  • Page 148 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-46. HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE After a hard landing, if the cabin fuselage shows signs of contacting the ground, consider the helicopter was subject to loads in excess of 10Gs.
  • Page 149 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-46. HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE If the landing gear airframe attach fittings are damaged, remove the lower wing access covers. Examine all of the wing attach fittings and bolts for cracks or damage.
  • Page 150 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-46. HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER Examine the main rotor adapters for signs of hard contact with the rotor static stops or yoke. Examine the main rotor adapters, yokes and static stops for damage. Make sure they are correctly attached.
  • Page 151 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-46. HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (6) The main driveshaft transmission end coupling grease retainer sleeves and the shaft area around them. 10. Examine the main rotor hub as follows: BHT-430-CR&O...
  • Page 152 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-46. HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER 13. Examine the cabin roof structure in the pylon link attachment area for loose, missing, or sheared rivets. Make sure that the roof panels and the support beam structure are not yielded or damaged.
  • Page 153 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-46. HARD LANDING (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER a. If the valves have activated, you will see that the vent lines have moved because the two halves must separate before the valve halves seal.
  • Page 155 • Main Rotor Blades — Any impact damage to the leading edge or lower skin which exceeds the limits specified in the BHT-430-CR&O. Any skin cracks. • Main Rotor Mast — Twisting, out of roundness or bowing which exceeds the limits specified in the BHT-430-CR&O.
  • Page 156 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-47. SUDDEN STOPPAGE — POWER ON OR OFF (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER • Tail Rotor Drive Shaft Hangers and Coupling — Distortion beyond limits specified BHT-430-CR&O. A rotating system torque spike is defined as any other incident which causes a severe torque spike in the drive system.
  • Page 157 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-47. SUDDEN STOPPAGE — POWER ON OR OFF (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Main rotor controls: BHT-430-CR&O-2 (1) If you find one or more of the discrepancies that follow in step (a)
  • Page 158 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-47. SUDDEN STOPPAGE — POWER ON OR OFF (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER e. Engine mounts: Rolls-Royce (1) Examine the Number 1 and Number 2 engine 250-C40B Operation mounts for cracks or bent or damaged mount bolts. If you...
  • Page 159 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-47. SUDDEN STOPPAGE — POWER ON OR OFF (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (b) The gap at the tail rotor driveshaft disc couplings is more than 0.005 inch (0.127 mm). (c) If you find that the tail rotor driveshaft tubes are bent or twisted.
  • Page 160 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-47. SUDDEN STOPPAGE — POWER ON OR OFF (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Tail rotor driveshafts: (1) Remove the tail rotor driveshafts and examine them for the conditions that follow. If you find one or more of the...
  • Page 161 BHT-430-CR&O-2. Make an entry in the component record to show that the reason for removal was a sudden stoppage.
  • Page 162 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-47. SUDDEN STOPPAGE — POWER ON OR OFF (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (3) Examine the transmission lower case duplex bearing. Replace the bearing if it is rough or damaged. (4) Examine the center bearing case roller bearing.
  • Page 163 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-48. OVERTORQUE INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ An overtorque is any incident where torsional loads greater than the allowed limits are applied into the helicopter dynamic system.
  • Page 164 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-48. OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (3) Measure the diameter of mast pole at three locations approximately 1.5 inches (38 mm) above swashplate drive spline, approximately 7.0 inches (178 mm) below top surface of hub mounting surface and at approximately midway between these two locations.
  • Page 165 When an overtorque is more than 115%, do the steps that follow: Chapter 62 a. Inspect the main rotor yokes and blades in accordance with BHT-430-CR&O-2 and Chapter 62. Pay particular attention to blade skins for distortion or debonding. 5-00-00 26 JAN 2007 Rev. 15...
  • Page 166 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-48. OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Do an overhaul of the components that follow. Make an entry in the component record to show that the reason for removal was an overtorque.
  • Page 167 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-48. OVERTORQUE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER c. Do a thorough visual inspection of the components that follow. You may keep the components in service if you do not find any damage. (1) Swashplate and levers assembly.
  • Page 169 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-49. ONE ENGINE INOPERATIVE (OEI) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ NOTE The Integrated Display System (IIDS) records any...
  • Page 170 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-49. ONE ENGINE INOPERATIVE (OEI) (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER NOTE If FADEC faults are recorded and engine was operated above 109.6% engine torque, overtorque has occurred. Refer to following step c. If the ECU did not record any FADEC faults, indicating a...
  • Page 171 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-49. ONE ENGINE INOPERATIVE (OEI) (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Record the length of time and the maximum engine torque in the transmission and main driveshaft maintenance records. Make an entry in the component record to show that the reason for removal was an OEI overtorque.
  • Page 173 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-50. LIGHTNING STRIKE INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ If the helicopter has had a lightning strike, do the following:...
  • Page 174 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-50. LIGHTNING STRIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Examine the main rotor yokes, elastomers, bearings, pitch links and attach hardware for signs of burns. Replace all parts that show signs of burning or arching and all attaching hardware.
  • Page 175 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-50. LIGHTNING STRIKE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER BHT-430-CR&O-2 (4) Assemble the main rotor if you did not find any damage. b. Remove the main rotor mast assembly. Do not remove the bearing from the mast. Examine the parts of the bearing that you can see for signs of electrical arcs or burns.
  • Page 177 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-51. OVERSPEED INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER DATE: __________________W.O. _____________________ FACILITY: _________________ _ ________________________ HELICOPTER S/N: __________ _ ________________________ REGISTRY NO.: ____________ _ ________________________ TOTAL TIME:_______________________________________ SIGNATURE:_______________ _ ________________________ Rolls-Royce Rotor overspeed is any incident where the main rotor speed 250-C40B Operation goes past 109%.
  • Page 178 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-51. OVERSPEED (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (4) If the retention bushings are loose, scrap the blade. (5) If the skin on any blade is wrinkled or deformed scrap all the blades. (6) If the blades pass the above inspection the blade can be returned to service.
  • Page 179 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-52. 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 is a rumble or a series of pops, severe engine vibration and a rapid rise in measured gas temperature (MGT).
  • Page 180 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-52. COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER d. If step a through step c do not determine the cause of the surge, examine the turbine assembly, refer to the engine maintenance manual.
  • Page 181 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-52. COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER (3) Tail rotor driveshaft flexible disc assemblies. (4) Tail rotor driveshafts. (5) Replace any unserviceable parts. Rotating controls: a. Visually examine the rotating controls and replace any unserviceable parts as necessary.
  • Page 182 BHT-430-MM-2 CONDITIONAL INSPECTIONS 5-52. COMPRESSOR STALL OR SURGE (CONT) INITIAL DATA REFERENCE INSPECTION TASK DESCRIPTION MECH OTHER b. Visually examine the complete tail boom structure for distortion, buckles, cracks in the skin and sheared or loose rivets. c. Visually examine the pylon support and engine mount structures for distortion, buckles, cracks, sheared or loose rivets.
  • Page 183 BHT-430-MM-2 COMPONENT OVERHAUL SCHEDULE 5-53. COMPONENT OVERHAUL SCHEDULE CAUTION The Component Overhaul Schedule (Table 5-2) provides the time interval between overhaul for each OVERHAUL SCHEDULE FOR SOME KIT applicable helicopter component. COMPONENTS AND/OR PARTS IS NOT COVERED IN THIS SCHEDULE. REFER...
  • Page 184 An interim inspection is necessary at 3000 hours for a new tail rotor gearbox and 3000 hours after each overhaul (BHT-430-CR&O-3). Replacement of bearing 222-344-606-101 with bearing 222-344-606-103 upgrades hanger assemblies 222-044-003-109 and -111 to hanger assemblies 222-044-003-113 and -115, respectively. Refer to Table 5-3 for configuration of tail rotor driveshaft hanger bearing assemblies.
  • Page 185 Bearing replacement may be accomplished without performing the complete overhaul procedure of the hanger assembly. An interim inspection is necessary at 3000 hours for a new transmission and 3000 hours after each overhaul (BHT-430-CR&O-2). 5-00-00 ECCN EAR99 9 SEP 2011 Rev.
  • Page 186 BHT-430-MM-2 Table 5-3. Tail Rotor Driveshaft Hanger Bearing Assembly NOMENCLATURE PART NUMBER HANGER -109 -111 -113 -115 222-044-003 NOTE ASSEMBLY (3)(5)(7) (4)(5)(7) (5)(6) (5)(6) Spacer 230-044-003-101 Spring 230-044-004-101 Bearing 222-344-606-101 (1)(7) Bearing 222-344-606-103 (2)(5)(6) Adapter 222-044-626-101 Adapter 222-044-626-103 Adapter 222-044-627-103...

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