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Textron Bell 206L3 Maintenance Manual Download Page 1

BHT-206L3-MM-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.

Maintenance Manual also applicable to 206L3+ helicopters (Increased Gross Weight kit 206-706-530
installed per BHT-206-SI-2052).

Export Classification C, ECCN EAR99

32672)),&(%2;)257:257+7(;$6

REISSUE — 27 AUGUST 1992

REVISION 24 — 25 JUNE 2019

COPYRIGHT NOTICE

COPYRIGHT

201

BELL ® HELICOPTER TEXTRON INC.
AND BELL HELICOPTER TEXTRON
CANADA LTD.

ALL RIGHTS RESERVED

MAINTENANCE MANUAL

VOLUME 1

GENERAL INFORMATION

1
2
3
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Summary of Contents for Bell 206L3

Page 1: ...gulatory agencies shall be strictly followed Maintenance Manual also applicable to 206L3 helicopters Increased Gross Weight kit 206 706 530 installed per BHT 206 SI 2052 Export Classification C ECCN E...

Page 2: ...pose other than helicopter operation or maintenance is forbidden without prior written authorization from Bell Helicopter Textron Inc Export Classification C ECCN EAR99 DESTINATION CONTROL STATEMENT W...

Page 3: ...IS NOT APPLICABLE TO NON BELL PARTS OR PARTS THAT HAVE BEEN REPAIRED USING DATA AND OR PROCESSES NOT APPROVED BY BELL BELL IS NOT RESPONSIBLE FOR ANY PART OTHER THAN THOSE THAT IT HAS APPROVED BEFORE...

Page 4: ...E network please access http www bellflight com support and service support Model 206 407 or 505 Phone 450 437 2862 or 800 363 8023 U S Canada Fax 450 433 0272 E mail productsupport bellflight com Mod...

Page 5: ...0 Revision 15 27 SEP 10 Revision 16 25 FEB 11 Revision 17 08 APR 11 Revision 18 29 FEB 12 Revision 19 01 JUN 12 Revision 20 07 NOV 12 Revision 21 07 JUN 13 Revision 22 15 MAY 15 Revision 23 23 MAR 17...

Page 6: ...3 4 0 Chapter 10 1 2 0 3 6 0 7 8 10 Chapter 11 1 2 10 3 12 10 13 22 14 16 10 Chapter 12 1 21 2 22 3 4 6 5 21 6 6 7 8 6 9 6 10 12 10 13 14 6 15 16 10 17 19 10 20 21 6 22 23 10 24 6 25 28 22 29 30 6 31...

Page 7: ...22 5 7 10 8 0 9 11 10 12 14 0 15 18 10 18A 18D 10 18E 18F 10 18G 18N 10 19 20 10 20A 20B 10 21 19 22 25 10 26 22 27 14 28 30 16 30A 30H 16 31 10 32 0 33 51 10 52 56 22 56A 56H 22 56I 10 56J 22 56K 56...

Page 8: ...3 17 0 18 20 10 21 0 22 16 23 0 24 10 25 0 26 28 10 29 30 10 Chapter 75 1 2 0 3 10 4 0 Chapter 76 1 2 22 3 22 22 Chapter 79 1 2 0 3 10 4 0 5 10 6 7 0 8 9 10 10 0 VOLUME 10 Cover 22 Title 22 PN 22 Chap...

Page 9: ...do and you discover it we would appreciate your telling us about it so that we can change whatever is incorrect or unclear Please be as specific as possible Your complaint or suggestion will be ackno...

Page 10: ......

Page 11: ...____________________________________________________ Now Reads ____________________________________________________________ _______________________________________________________________________ ____...

Page 12: ...TAPE HERE From POSTAGE NECESSARY Product Support Engineering 12 800 rue de l Avenir Mirabel Qu bec Canada J7J 1R4 FOLD ON DOTTED LINES AND TAPE TAPE HERE Export Classification C ECCN EAR99...

Page 13: ...ew Operator _______________________________________________________ Future Publications to be mailed to this address Address ____________________________________________________________________ City _...

Page 14: ...MAILED IN THE UNITED STATES COMMERCIAL PUBLICATION DISTRIBUTION CENTER P O BOX 482 FORT WORTH TEXAS 76101 0482 FOLD ON DOTTED LINES AND TAPE BUSINESS REPLY MAIL FIRST CLASS PERMIT NO 1744 FORT WORTH T...

Page 15: ...and strict tort delictual liability with respect to work performed by third parties at Purchaser s request and with respect to engines engine accessories batteries radios and avionics except Seller as...

Page 16: ......

Page 17: ...Page Number Title Number 4 1 Tailboom Upper Left Attachment Fitting 206 032 409 001 Recurring 110 Hour Inspection 13 TABLES Table Page Number Title Number 4 1 Airworthiness Limitations Schedule 6 4 2...

Page 18: ...25 JUN 2019 Export Classification C ECCN EAR99 REVISION NO DATE OF SIGNATURE APPROVAL SIGNATURE Original N A N A Reissue N A N A Reissue 27 August 1992 1 N A N A 2 N A N A 3 N A N A 4 09 December 200...

Page 19: ...UN 2019 Rev 24 Page 3 Export Classification C ECCN EAR99 8 20 August 2008 9 26 May 2009 10 N A N A 11 25 September 2009 12 N A N A 13 N A N A 14 N A N A 15 N A N A 16 N A N A 17 8 April 2011 REVISION...

Page 20: ...ED 4 00 00 Page 4 Rev 24 25 JUN 2019 Export Classification C ECCN EAR99 18 29 February 2012 19 1 June 2012 20 7 November 2012 21 N A N A 22 N A N A 23 N A N A 24 25 JUNE 2019 REVISION NO DATE OF SIGNA...

Page 21: ...E AIRWORTHINESS OF THE HELICOPTER THE COMPONENT MUST BE REMOVED FROM THE HELICOPTER NOT LATER THAN THE END OF THE LIFE LIMIT IT MUST EITHER BE MADE UNSERVICEABLE OR MARKED IN A CONSPICUOUS MANNER TO P...

Page 22: ...is the warranty included in the Purchase Agreement for the helicopter or the component The airworthiness lives given to the components and assemblies are determined by experience tests and the judgme...

Page 23: ...Link 206 010 446 107 14 400 hours Collective Lever 206 010 447 105 1200 hours Collective Lever 206 010 447 109 14 400 hours Swashplate Support Assembly 206 010 452 109 4800 hours Swashplate Support As...

Page 24: ...e 206 053 119 ALL Fixed Floats Landing Gear Aft Crosstube 206 053 211 103 Emergency Floats Reservoir 1269556 3 4 15 years Emergency Floats Reservoir 1271226 15 years Emergency Floats Squib 29022968 Em...

Page 25: ...strap 206 011 147 007 must be removed from service Refer to ASB 206L 89 60 dated 29 August 1989 for list of serial numbers affected Selected serial numbers of main rotor blades 206 015 001 001 103 10...

Page 26: ...105 109 when RIN 44 000 For each takeoff lift add one RIN if the mast is installed on 206L 206L1 or 206L3 includes 206L3 with Increased Power Operation kit installed per BHT 206 SI 2039 and two RIN i...

Page 27: ...ervice life Example 2 Cutter assembly stored for 48 months 60 48 12 month service life Example 3 Cutter assembly stored for 1 month 60 1 59 months reduced to 36 months maximum service life Affected ho...

Page 28: ...r Left Attachment Fitting 206 032 409 001 110 hours NOTES Inspection limitation for the part number listed applies to all successive dash numbers for that component unless otherwise specified You must...

Page 29: ...hment fitting for cracks mechanical damage corrosion damage loose rivets and general condition 2 Refer to ASB 206L 09 158 for wear damage and repair limits 3 Repair fitting in accordance with ASB 206L...

Page 30: ......

Page 31: ...o 2 5 00 00 27 5 18 100 Hour Airframe Progressive Inspection Event No 3 5 00 00 33 5 19 100 Hour Airframe Progressive Inspection Event No 4 5 00 00 39 5 20 100 Hour Airframe Periodic Inspection 5 00 0...

Page 32: ...ation 5 00 00 149 5 51 100 Hours After Each Installation 5 00 00 151 CONDITIONAL INSPECTIONS 5 52 Conditional Inspections 5 00 00 153 5 53 Hard Landing 5 00 00 155 5 54 Sudden Stoppage Acceleration 5...

Page 33: ...ter Textron engineers They are subject to change only by Bell Helicopter Textron or an approved Airworthiness Authority Changes to the TBO will be introduced by either revision to the Maintenance Manu...

Page 34: ...omponent overhaul inspections a Scheduled inspections must occur at specified operating intervals The intervals may be in operating time hours cycles torque events RIN calendar days months years or ot...

Page 35: ...gular basis to prevent non scheduled maintenance Operating time Actual flight or calendar time that must be recorded in the Historical Service Records or in the helicopter logs The operating time is s...

Page 36: ...licable for those operators whose governing aviation authority requires to specifically approve the inspection and overhaul tolerance If approval of the inspection and overhaul tolerance is required b...

Page 37: ...imum of 300 hours operating time 6 months calendar time whichever is less 2250 HOUR 60 MONTH INSPECTION DUE AT MAXIMUM ALLOWED TOLERANCE INSPECTION CARRIED OUT AT NEXT 2250 HOUR 60 MONTH INSPECTION DU...

Page 38: ......

Page 39: ...gressive inspections are divided into separate events of similar workload Table 5 1 Table 5 2 and Figure 5 1 NOTE All conditions of Table 5 3 must be met to utilize the 300 hour airframe progressive i...

Page 40: ...hs If you do not complete all six events in a 12 calendar month period the remaining events must be completed prior to operating the helicopter In addition to performing the 300 hour airframe progress...

Page 41: ...to perform and record the following scheduled inspections NOTE Every 300 hours of operation helicopters completing the 100 hour airframe periodic inspection program also need to accomplish the 300 ho...

Page 42: ...n program or the airframe progressive inspection program from the start You can change between the two programs at any airframe operating time as follows To change from a 100 hour airframe progressive...

Page 43: ...is an acceptable alternate provided ASB 206L 97 108 is accomplished X X X X X Tail Rotor Hub Assembly 206 011 810 153 TB 206L 09 239 X X X X X Tailboom Attachment Fittings and Longeron Assembly 206 0...

Page 44: ...for 206 040 387 101 X X X X X Tail Rotor Gearbox Assembly 206 040 402 111 TB 206L 99 197 206 040 402 101 107 are acceptable fielded substitutes for 206 040 402 111 X X X X X Oil Cooler Blower Impelle...

Page 45: ...irframe progressive inspection program or the 300 hour airframe periodic inspection program the helicopter must have all of the parts listed installed or subsequent part numbers to those listed based...

Page 46: ......

Page 47: ...8 ZONE 9 ZONE 4 ZONE 5 ZONE 6 ZONE 2 Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6 Zone 7 Zone 8 Zone 9 Zone 10 Main rotor hub and blade assembly Tail rotor hub and blade assembly Forward top deck Power p...

Page 48: ......

Page 49: ...EM Chapter 11 PLACARDS AND MARKINGS 1 Examine the placards decals and markings Make sure they are readable correctly applied and in agreement with the applicable configuration of your helicopter Chapt...

Page 50: ...Nm Examine for misalignment of anti slippage marks 11 Examine main rotor yoke for corrosion or mechanical damage as follows BHT 206L CR O a Examine fillet radius of both yoke spindles inboard of wear...

Page 51: ...KINGS 1 Examine the placards decals and markings Make sure they are readable correctly applied and in agreement with the applicable configuration of your helicopter Chapter 64 TAIL ROTOR ASSEMBLY 1 Cl...

Page 52: ...Rubber bumper c Static stop d Nut e Balance wheel ZONE 3 FORWARD DECK Chapter 11 PLACARDS AND MARKINGS 1 Examine the placards decals and markings Make sure they are readable correctly applied and in...

Page 53: ...ition and security Chapter 67 CONTROLS 1 Examine the following flight control components for signs of interference corrosion wear mechanical damage and security a Control tubes b Links c Rod and beari...

Page 54: ...ring to check duplex bearing for condition Bearing must be smooth and show no evidence of roughness binding dragging or looseness 7 Examine pivot sleeve slot sidewalls for wear or deterioration 8 Exam...

Page 55: ...n 3 Examine hydraulic reservoir for leaks and general condition 4 Examine servo actuators for leaks condition and security 5 Examine servo actuator support for condition Chapter 67 6 Verify linkage pi...

Page 56: ...or condition and security Stop mount bushings for wear g All pylon support elastomeric components for evidence of deterioration h All pylon support hardware for security of attachment 2 Examine transm...

Page 57: ...veshaft for freedom and smoothness of axial movement Inspect bolts for security Inspect TEMP PLATES for evidence of overheating indication deterioration debonding or excessive discoloration of the epo...

Page 58: ...ne and rail rotor gearbox prior to running helicopter 3 Make sure that helicopter is ready for ground run and that surrounding area is clear BHT 206L3 FM 1 BHT 206L4 FM 1 for 206L3 IGW Upgrade 4 Start...

Page 59: ...mine the placards decals and markings Ensure they are readable correctly applied and in agreement with the applicable configuration of your helicopter AIRFRAME POWER PLANT AREA Chapter 71 1 Examine fi...

Page 60: ...ty a Pay particular attention for chafing damage and kinked lines 6 Examine exhaust stack for condition and security 7 Examine all engine mounted accessories for condition and security Chapter 75 8 Ex...

Page 61: ...he 40 mark on the quadrant e Verify control linkage for excessive looseness lost motion and binding 14 Verify operation of engine N2 control as follows a Position N2 governor actuator to full DECREASE...

Page 62: ...opters torque check forward short shaft disc pack coupling fasteners 150 to 180 inch pounds 16 9 to 20 3 Nm Chapter 96 ELECTRICAL 1 Examine all electrical components wires cables and connectors in the...

Page 63: ...n and security Chapter 79 5 Examine oil tank for leakage condition and security Check oil for contamination 6 Examine oil tank supports for condition and security Chapter 71 7 Examine the oil cooler s...

Page 64: ...Y QUALIFIED PERSONNEL ONLY Chapter 12 1 Make sure applicable servicing requirements have been carried out 2 Check oil level of transmission hydraulic tank engine and rail rotor gearbox prior to runnin...

Page 65: ...lacards decals and markings Ensure they are readable correctly applied and in agreement with the applicable configuration of your helicopter Chapter 53 TAILBOOM STRUCTURE NOTE In the event that cracks...

Page 66: ...hafing between tailboom skin and fairing Pay particular attention to rivets attaching the tail rotor gearbox support to the tailboom BHT 206 SRM f Replace any loose or working rivets found g Replace r...

Page 67: ...and side play 5 Examine auxiliary finlets for condition and security 6 Inspect the vertical fin attachment support for condition and damage Pay particular attention to the vertical fin attachment poi...

Page 68: ...aterial Chapter 96 6 Perform operational check of the tail rotor gearbox chip detector Chapter 64 TAIL ROTOR PITCH CHANGE CONTROLS 1 Examine the tail rotor pitch control mechanism for freedom of trave...

Page 69: ...ake sure applicable servicing requirements have been carried out 2 Check oil level of transmission hydraulic tank engine and rail rotor gearbox prior to running helicopter 3 Make sure that helicopter...

Page 70: ......

Page 71: ...er 11 PLACARDS AND MARKINGS 1 Examine the placards decals and markings Ensure they are readable correctly applied and in agreement with the applicable configuration of your helicopter BHT 206L3 FM 1 B...

Page 72: ...replace missing or out of date items Chapter 67 CONTROLS 1 Examine the collective control stick for condition and security Examine copilot collective control stick if installed 2 Examine the cyclic c...

Page 73: ...acards decals and markings Ensure they are readable correctly applied and in agreement with the applicable configuration of your helicopter FUSELAGE Chapter 53 1 Examine forward fuselage for condition...

Page 74: ...rom low fuel warning switch to fuel boost pump retainer 12 Examine all fuselage sealant joints for condition Restore sealant as necessary Chapter 96 and Chapter 97 ELECTRICAL AND AVIONICS 1 Examine al...

Page 75: ...ondition and freedom from obstructions Applicable Service Instruction 6 Examine heater and or air conditioning inlets and outlets for cleanliness and absence of obstructions if installed Chapter 53 7...

Page 76: ...fittings on fuselage aft bulkhead and tailboom forward bulkhead for cracks Give special attention to the tailboom attachment fittings intercostals and bolts and to fasteners between the intercostal P...

Page 77: ...nstalled for condition and security 4 Examine fairings if installed for condition and security 5 Examine crosstube riveted or clamped supports for condition and security Give particular attention to t...

Page 78: ...out 2 Check oil level of transmission hydraulic tank engine and rail rotor gearbox prior to running helicopter 3 Make sure that helicopter is ready for ground run and that surrounding area is clear BH...

Page 79: ...___________________ HELICOPTER S N __________ _________________________ REGISTRY NO ____________ _________________________ TOTAL TIME _______________________________________ SIGNATURE _______________...

Page 80: ......

Page 81: ...EM Chapter 11 PLACARDS AND MARKINGS 1 Examine the placards decals and markings Make sure they are readable correctly applied and in agreement with the applicable configuration of your helicopter Chapt...

Page 82: ...mine fillet radius of both yoke spindles inboard of wear sleeves for evidence of corrosion If corrosion is visible remove with fine abrasive pad C 407 If corrosion cannot be removed with pads or is ex...

Page 83: ...licable configuration of your helicopter Chapter 64 TAIL ROTOR ASSEMBLY 1 Clean tail rotor blades to maintain visibility of warning stripes BHT 206L CR O 2 Examine the following tail rotor hub assembl...

Page 84: ...eel 5 Check dynamic balance of tail rotor hub and blade assembly and adjust as required during ground run GROUND RUN CAUTION GROUND RUN OF HELICOPTER TO BE ACCOMPLISHED BY QUALIFIED PERSONNEL ONLY Cha...

Page 85: ...nduct ground run at 100 NR to check for leaks and ensure all systems are operational and parameters are within Flight Manual limitations PROGRESSIVE INSPECTIONS 5 21 300 HOUR AIRFRAME PROGRESSIVE INSP...

Page 86: ......

Page 87: ...ECK Chapter 11 PLACARDS AND MARKINGS 1 Examine the placards decals and markings Make sure they are readable correctly applied and in agreement with the applicable configuration of your helicopter AIRF...

Page 88: ...orts f Attaching bolts and nuts 2 Inspect main rotor pitch links with a 3X magnifying glass for damage corrosion and cracks Give particular attention to swaged ends at jam nut or inserts Chapter 76 3...

Page 89: ...evidence of excessive axial play between pivot sleeve and swashplate support 9 Examine collar set bushings for cracks and damage 10 Examine swashplate support and uniball surfaces for condition 11 Exa...

Page 90: ...r Chapter 12 4 Lubricate hydraulic pump shaft splines and rotor tachometer splines 5 Examine hydraulic reservoir for leaks and general condition 6 Examine servo actuators for leaks condition and secur...

Page 91: ...or wear g All pylon support elastomeric components for evidence of deterioration h All pylon support hardware for security of attachment 2 Examine transmission assembly for condition and security 3 Ex...

Page 92: ...freedom and smoothness of axial movement Inspect bolts for security Inspect TEMP PLATES for evidence of overheating indication deterioration debonding or excessive discoloration of the epoxy overcoati...

Page 93: ...ng helicopter 3 Make sure that helicopter is ready for ground run and that surrounding area is clear BHT 206L3 FM 1 BHT 206L4 FM 1 for 206L3 IGW Upgrade 4 Start the helicopter and conduct ground run a...

Page 94: ......

Page 95: ...als and markings Ensure they are readable correctly applied and in agreement with the applicable configuration of your helicopter AIRFRAME POWER PLANT AREA Chapter 71 1 Examine firewalls for condition...

Page 96: ...e engine inlet bellmouth for obstruction and general condition 3 Examine engine compartment hardware for security of attachment 4 Examine engine for evidence of fuel or oil leaks 5 Examine all flexibl...

Page 97: ...rip reaches travel limit NOTE If dual controls are installed it is permissible for pointer to be 0 078 inch 1 98 mm below 40 mark when copilot twist grip is used d Rotate throttle grip to idle detent...

Page 98: ...step does not apply to helicopters equipped with fuel filter assembly 222 366 621 103 a Remove outlet port fitting from filter head b Pass a 0 020 inch 0 50 mm wire through the bleed hole in outlet po...

Page 99: ...retention clamp for condition and security 5 Examine the splines on starter generator shaft and engine gear shaft DRIVETRAIN Chapter 63 1 Examine freewheel assembly for condition leaks and security C...

Page 100: ...on filter head GROUND RUN CAUTION GROUND RUN OF HELICOPTER TO BE ACCOMPLISHED BY QUALIFIED PERSONNEL ONLY Chapter 12 1 Make sure applicable servicing requirements have been carried out 2 Check oil le...

Page 101: ...ZONE 5 AFT TOP DECK PLACARDS AND MARKINGS Chapter 11 1 Examine the placards decals and markings Ensure they are readable correctly applied and in agreement with the applicable configuration of your h...

Page 102: ...Using dye penetrant methods inspect oil cooler blower impeller 206 061 432 031 for cracks Give particular attention to the mounting flange where individual blades attach 3 Examine oil cooler blower im...

Page 103: ...ove and examine tail rotor driveshaft cover and fasteners for condition and security 2 Remove and examine tail rotor gearbox fairings for condition 3 Examine anti chafing adhesive tape C 460 on tailbo...

Page 104: ...chment bolts 8 Examine elevators for condition security and side play 9 Examine auxiliary finlets for condition and security 10 Examine vertical fin assembly for condition and security 11 Inspect the...

Page 105: ...rotor gearbox for oil leaks condition and security 3 Examine gearbox oil for evidence of contamination 4 Examine tail rotor output shaft for condition 5 Torque check tail rotor gearbox retaining nuts...

Page 106: ...e antennas for condition and security GROUND RUN CAUTION GROUND RUN OF HELICOPTER TO BE ACCOMPLISHED BY QUALIFIED PERSONNEL ONLY Chapter 12 1 Make sure applicable servicing requirements have been carr...

Page 107: ...ONE 7 CABIN INTERIOR Chapter 11 PLACARDS AND MARKINGS 1 Examine the placards decals and markings Ensure they are readable correctly applied and in agreement with the applicable configuration of your h...

Page 108: ...bes for evidence of chafing with oil line or flex cable b Flight control system bellcranks levers supports and walking beams for binding excessive looseness and security of attachment Chapter 95 c Oil...

Page 109: ...lt buckles Pull promptly on each reel to confirm the proper activation of the reel locking mechanism 5 Examine the interior trim for condition and security Chapter 52 6 Verify sliding windows for safe...

Page 110: ...eration of cockpit map reading light 2 Verify operation of aft cabin reading lights if installed CAUTION USE EXTREME CARE WHEN IN PROXIMITY OF PITOT TUBE WITH HEAT APPLIED TOUCHING TUBE MAY RESULT IN...

Page 111: ...nd wear d Windows e Handles Chapter 95 3 Drain moisture from pitot and static piping installation Chapter 53 4 Examine the external power door and receptacle for condition and security 5 Examine batte...

Page 112: ...the area of the forward fuselage for chafing and general condition and security 2 Remove battery and recondition in accordance with BHT ALL SPM and manufacturer s service manual 3 Examine battery vent...

Page 113: ...icopter is ready for ground run and that surrounding area is clear BHT 206L3 FM 1 BHT 206L4 FM 1 for 206L3 IGW Upgrade 4 Start the helicopter and conduct ground run at 100 NR to check for leaks and en...

Page 114: ......

Page 115: ...decals and markings Make sure they are readable correctly applied and in agreement with the applicable configuration of your helicopter FUSELAGE EXTERIOR Chapter 53 1 Examine aft fuselage for dents cr...

Page 116: ...ine interface between longerons and engine pan structure for cracks corrosion distortion and loose fasteners e Inspect engine mount attachment structure for condition 3 Remove fuel shutoff valve acces...

Page 117: ...pter Chapter 32 CROSSTUBES 1 Examine crosstube retaining straps cushions and attaching hardware for condition and security 2 Examine fuselage attachment fittings for condition and security 3 Examine e...

Page 118: ...TION GROUND RUN OF HELICOPTER TO BE ACCOMPLISHED BY QUALIFIED PERSONNEL ONLY Chapter 12 1 Make sure applicable servicing requirements have been carried out 2 Check oil level of transmission hydraulic...

Page 119: ...___________________ HELICOPTER S N __________ _________________________ REGISTRY NO ____________ _________________________ TOTAL TIME _______________________________________ SIGNATURE _______________...

Page 120: ......

Page 121: ..._____________________________________ SIGNATURE _______________ _________________________ NOTE 100 hour inspection must be accomplished when using the 300 hour airframe progressive inspection program...

Page 122: ...ks are found during inspection of tailboom contact Bell Helicopter Textron Product Support Engineering 5 Examine tailbooms 206 033 004 045 and prior modified in accordance with ASB 206L 87 47 as follo...

Page 123: ...ant for integrity Reseal as required i 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...

Page 124: ...licable to tailbooms modified in accordance with ASB 206L 99 115 examine doubler around stabilizer on left side for integrity of sealant Reseal as required SCHEDULED INSPECTIONS 5 28 100 HOUR INSPECTI...

Page 125: ...of operation the 300 hour inspection must be accomplished in conjunction with the 100 hour airframe progressive inspection program or the 100 hour airframe periodic inspection program FORWARD FUSELAGE...

Page 126: ...or binding excessive looseness and security of attachment Chapter 95 c Oil lines for leakage condition and security Chapter 53 d Roof beam interface with vertical tunnel for cracks corrosion and loose...

Page 127: ...equired Chapter 96 ELECTRICAL 1 Remove battery and recondition in accordance with BHT ALL SPM and manufacturer s service manual FUSELAGE Chapter 52 1 Inspect latches on crew doors for correct adjustme...

Page 128: ...olls Royce Operation and Maintenance Manual Chapter 95 2 Perform operational check of turbine outlet temperature system Chapter 95 and Chapter 12 3 Examine N1 and N2 tachometer generator shaft splines...

Page 129: ...purged from fuel filter head and check for fuel leaks during ground run STARTER GENERATOR Chapter 71 1 Remove starter generator Examine mounting pad and clamp for condition Chapter 96 2 Examine commut...

Page 130: ...s Check wiring and plumbing for security and condition g Inspect aft passenger rear bulkhead for indication of screw contact or cracks in area of hat bin attachment anchor nuts 2 Inspect aft passenger...

Page 131: ...s 50 to 70 inch pounds 5 6 to 7 9 Nm TAIL ROTOR HUB AND BLADE ASSEMBLY Chapter 64 1 Check dynamic balance of tail rotor hub and blade assembly 2 Adjust as required SCHEDULED INSPECTIONS 5 29 300 HOUR...

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Page 133: ...TURE _______________ _________________________ 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...

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Page 135: ...d every 1200 flight hours Chapter 67 CYCLIC CONTROL STICK Chapter 67 1 Open right crew door to gain access to pilot cyclic control stick Remove cyclic control stick BHT 206L CR O 2 Clean lower 4 inche...

Page 136: ...corrosion damage Bore damage is not to exceed 0 002 inch 0 051 mm for 1 4 of the circumference Limit of one repair per bore Repair or replace lever assembly as required 8 For cyclic stick tubes consi...

Page 137: ...and support 2 Gain access to inside of tailboom from right side Using a bright light perform inspection of skin on inside surface of left side of tailboom for cracks a Inspect skin in area where doub...

Page 138: ...nd corrosion and nylatron sleeve for debonding at five areas where tube contacts tailboom fairleads as follows a To gain access to control tube remove tail rotor gearbox fairing and access panel on ri...

Page 139: ...at any point or if wear extends more than half way around tube regardless of depth scrap control tube d Inspect tube for corrosion Pay particular attention to bond line at nylatron sleeves Chapter 67...

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Page 141: ...ACILITY _________________ _________________________ HELICOPTER S N __________ _________________________ REGISTRY NO ____________ _________________________ TOTAL TIME __________________________________...

Page 142: ......

Page 143: ...UB AND BLADES Preventive maintenance NOTE The following procedures shall be accomplished as frequently as deemed necessary when operating in rain corrosive salt laden air or other adverse environmenta...

Page 144: ...Apply a light coat of preservative oil C 125 to all hub and blade surfaces Flood areas between main rotor hub grip tangs and blades latch bolts to grips and yoke fillet areas just inboard of pitch hor...

Page 145: ...____________ SIGNATURE _______________ _________________________ GENERAL 1 Ensure that a 100 or 300 hour airframe progressive inspection all four or six events as applicable or the 100 or 300 hour air...

Page 146: ......

Page 147: ...___________ TOTAL TIME _______________________________________ SIGNATURE _______________ _________________________ Chapter 62 BHT 206A B L Series CR O MAIN ROTOR MAST 1 Inspect mast assembly as follow...

Page 148: ......

Page 149: ...MEK C 309 Wipe dry 3 Visually inspect bolts nuts for corrosion and thread damage Replace any bolts nuts that have damaged threads detectable wear and or corrosion pitting 4 Apply a coating of corrosio...

Page 150: ...t pump assemblies and inspect fuel cell interiors for debris water contamination and fungus growth 2 Remove clean and inspect fuel manifold assembly 3 Remove clean and inspect inline fuel filters and...

Page 151: ...BHT 206L3 MM 1 5 00 00 15 MAY 2015 Rev 22 Page 119 Export Classification C ECCN EAR99 Figure 5 2 Inspection of Main Rotor Flight Control Bolts Nuts Sheet 1 of 2...

Page 152: ...BHT 206L3 MM 1 5 00 00 Page 120 Rev 22 15 MAY 2015 Export Classification C ECCN EAR99 Figure 5 2 Inspection of Main Rotor Flight Control Bolts Nuts Sheet 2 of 2...

Page 153: ...HT 206L3 MM BHT 206L CR O FREEWHEEL ASSEMBLY NOTE This inspection applies to 206L3 IGW Upgrade helicopters equipped with freewheel assembly 406 040 500 143 or subsequent Do this inspection if an overh...

Page 154: ......

Page 155: ...____________ _________________________ TOTAL TIME _______________________________________ SIGNATURE _______________ _________________________ NOTE This inspection is only applicable when conducting t...

Page 156: ......

Page 157: ..._____ _________________________ TOTAL TIME _______________________________________ SIGNATURE _______________ _________________________ TRANSMISSION NOTE This inspection is applicable to transmission a...

Page 158: ......

Page 159: ...________ REGISTRY NO ____________ _________________________ TOTAL TIME _______________________________________ SIGNATURE _______________ _________________________ Chapter 63 MAIN DRIVESHAFT NOTE Not a...

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Page 161: ..._______ Chapter 63 FREEWHEEL ASSEMBLY WITH CLUTCH CL41742 1 Chapter 63 1 Remove freewheel assembly BHT 206L CR O 2 Disassemble clean and visually inspect freewheel assembly 3 Visually inspect clutch a...

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Page 163: ...1 Remove disassemble and clean main rotor mast 2 Inspect main rotor mast as follows a Visually inspect mast splines for burrs nicks cracks and wear Indication of wear requires an over pins dimensiona...

Page 164: ...7 Install mast oil filter and transmission FREEWHEEL ASSEMBLY WITH CLUTCH CL42250 1 Chapter 63 1 Remove freewheel assembly BHT 206L CR O 2 Disassemble the freewheel assembly to the extent necessary to...

Page 165: ...pter 62 ASB 206L 93 89 SWASHPLATE SUPPORT 206 010 452 001 005 109 NOTE If windy conditions prevail secure blades with tie down to prevent excessive main rotor flapping 1 Thoroughly clean swashplate su...

Page 166: ......

Page 167: ...his inspection is applicable to transmission assemblies 206 040 004 107 and subsequent 206 040 004 115 and subsequent for 206L3 IGW Upgrade helicopters that have been operating with DOD PRF 85734 oil...

Page 168: ...ndition 7 Reassemble the transmission Chapter 63 8 Install the mast and swashplate assembly into the transmission assembly 9 Apply sealant primer and paint to the required areas 10 Install the transmi...

Page 169: ...ng 206 040 410 003 005 101 or subsequent replacement at 3000 hours 1 Perform backlash check of the gearbox prior to disassembly Backlash shall be 0 003 to 0 011 inch 0 08 to 0 28 mm and shall not vary...

Page 170: ...y obscure level or color of oil Inspect oil level indicator for discoloration peeling paint or evidence of a plastic film on painted side Remove plastic film if present 8 Reassemble gearbox Exercise c...

Page 171: ...ecial inspections on the helicopter paragraph 5 47 through paragraph 5 51 After fuel system maintenance and or component change 1 to 5 hours after each installation 3 to 8 hours after each installatio...

Page 172: ......

Page 173: ...OTE Installation and removal of a fuel boost pump cartridge fuel quantity probe or fuel drain valve does not require this inspection If fuel system maintenance and or component change removal is perfo...

Page 174: ...aft to forward fuel cells has not taken place Chapter 28 f Remove fuel quantity probe from left forward fuel cell Inspect cell to ensure fuel transfer from aft to forward fuel cells has not taken pla...

Page 175: ...d before commencing flight operations a Verify fuel boost pump check valve and fuel shutoff valve for proper operation b Make sure all hoses and lines are serviceable and do not have cracked flares an...

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Page 177: ...FACILITY _________________ _________________________ HELICOPTER S N __________ _________________________ REGISTRY NO ____________ _________________________ TOTAL TIME _________________________________...

Page 178: ......

Page 179: ...TY _________________ _________________________ HELICOPTER S N __________ _________________________ REGISTRY NO ____________ _________________________ TOTAL TIME _______________________________________...

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Page 181: ...142 N If not within limits adjust to 15 to 32 pounds 67 to 142 N Check tilt friction every 10 to 25 hours until it is stabilized Chapter 65 DISC PACK COUPLING Torque check disc pack coupling attaching...

Page 182: ...TOR 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 SPECIAL INSPECTIONS 5 50 10 TO 25 HOURS AFTER EACH...

Page 183: ..._____ _________________________ POWER PLANT Chapter 71 1 Torque check engine mount attachment hardware at engine and airframe attachment points 2 If fastener is improperly torqued do the following a C...

Page 184: ...hours 2 Check transmission top case stud nuts for torque a For transmission 206 040 004 101 111 100 to 140 inch pounds 12 to 15 Nm b For transmission 206 040 004 107 115 130 to 160 inch pounds 15 to 1...

Page 185: ...e applicable conditional inspections paragraph 5 53 through paragraph 5 59 of the helicopter after the following Hard landing Sudden stoppage acceleration Overspeed Main rotor 114 or greater Overtorqu...

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Page 187: ...iscovered the blades may be retained in service for continued usage If on a hard landing either main rotor blade comes into contact with the ground tailboom or other foreign object both main rotor bla...

Page 188: ...orted fuselage resulting in major stresses and damage to components 3 Remove all cowlings and fairings necessary to perform a complete visual inspection Rolls Royce 250 C30 Series Operation and Mainte...

Page 189: ...ge On fixed control tubes the swaged end must be concentric to tube within 0 06 inch 1 5 mm total indicator reading Inspect bearings for smoothness and maximum allowable wear 8 Check for leaks in hydr...

Page 190: ...or blades for damage If damage is found accomplish tail rotor Sudden Stoppage Acceleration inspection paragraph 5 54 12 Inspect fuel and oil systems for damage Before flight check fuel and oil systems...

Page 191: ...remove the following components and conduct an overhaul a Main rotor hub assembly in accordance with the Conditional Inspection criteria b Transmission assembly c Main driveshaft assembly grease lubr...

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Page 193: ...n or acceleration of the drive system whether caused by seizure within the drive system impact of the main rotor with the ground or with a foreign object of sufficient inertia to cause rapid decelerat...

Page 194: ...evered during main rotor sudden stoppage acceleration the main rotor hub assembly must be considered unserviceable and scrapped BHT 206L CR O a Main rotor hub assembly in accordance with the Condition...

Page 195: ...g may be detected by measuring the offset between the mast splines above and below the main rotor trunnion split cone groove by sliding a straight edge across the upper and lower unworn face of the sp...

Page 196: ...ouplings according to step l and step m Inspect hanger attachment points for cracks and distortion BHT 206L CR O k Inspect tail rotor driveshafts for out of round condition and distortion or bowing ex...

Page 197: ...Maintenance Manual 14W2 for sudden stoppage inspection requirements SUDDEN STOPPAGE ACCELERATION TAIL ROTOR Sudden stoppage acceleration is defined as any rapid deceleration or acceleration of the tor...

Page 198: ...bly grease lubricated d Tail rotor pitch change mechanism BHT ALL SPM 3 Inspect all tail rotor driveshaft impeller steel and aluminum adapters flexible coupling discs and hangers using magnetic partic...

Page 199: ...LL bonded tail rotor driveshaft shall be considered unserviceable and scrapped if during a sudden stoppage inspection any of the following conditions which are attributable to the sudden stoppage are...

Page 200: ...orizontal stabilizer for cracks and looseness 12 Inspect vertical fin for security and overall condition Check tail skid for condition and security Check mounting of anticollision light for security a...

Page 201: ...MAIN ROTOR 114 OR GREATER NOTE Components removed from a helicopter for evaluation following an overspeed shall be evaluated as an interrelated group Removal records accompanying each component shall...

Page 202: ...to a Bell Helicopter Textron approved major overhaul facility for evaluation 4 If main rotor blades pass the previous inspection they are acceptable for continued service c Tail rotor blades 1 If one...

Page 203: ...SPM f Inspect oil cooler fan impeller for visible distortion or cracks of the brazed vane joints using dye penetrant inspection method Rolls Royce 250 C30 Series Operation and Maintenance Manual 14W2...

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Page 205: ...ollowing an overtorque 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 fo...

Page 206: ...eshaft for deformation and cracks If deformation cracks or other damage is found discard the driveshaft CAUTION A QUALIFIED PERSON MUST BE AT THE HELICOPTER CONTROLS DURING THE FOLLOWING PROCEDURE BHT...

Page 207: ...g Transmission restraint attachment at stop mounts support and cabin roof shell and beam h Transmission electric chip detectors i Tail rotor gearbox chip detector and gearbox attachments j Tail rotor...

Page 208: ...l Replace top case of main transmission and transmission link attachments During overhaul inspect gear patterns for shifting and scuffing d Remove and overhaul main driveshaft grease lubricated For 20...

Page 209: ...transmission mount attachment points g Transmission restraint attachment h Transmission electric chip detectors i Tail rotor gearbox chip detectors and gearbox attachments j Tail rotor hub blades and...

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Page 211: ...surge When a stall or surge is suspected follow steps as dictated by reported conditions The components removed from the helicopter for evaluation following a compressor stall or surge shall be evalu...

Page 212: ...induction fairing and examine the compressor intake area as follows The compressor rotor for contamination If contamination is found perform a compressor wash Refer to applicable BHT 206L3 MM 9 Chapte...

Page 213: ...lity for overhaul 2 Examine the tail rotor driveshafts for condition and security of attachment 3 Examine the tail rotor disc pack couplings for cracks or gapping greater than 0 015 inch 0 38 mm 4 Exa...

Page 214: ...roved facility for overhaul 2 Examine the tail rotor blade s for condition If any damage suspected to be related to the stall or surge is found remove both of the tail rotor blade s Make an entry on t...

Page 215: ...IS MAIN ROTOR HUB ASSEMBLY WAS REMOVED FROM SERVICE BECAUSE OF A COMPRESSOR STALL SURGE Send the component to an approved facility for overhaul 5 If no defects were detected on main rotor hub the main...

Page 216: ...RESSOR STALL Send the driveshaft to an approved facility for overhaul 4 If no defects were detected on the couplings re assemble and return the engine to transmission driveshaft to service Chapter 63...

Page 217: ...verhaul 4 If no defects were detected on the gears the transmission assembly is serviceable TAIL ROTOR GEARBOX BHT 206L CR O 1 Remove the tail rotor gearbox input pinion 2 Inspect the following gear t...

Page 218: ...s of the transmission assembly freewheel assembly and tail rotor gearbox 2 If the chip detector shows signs of metal particles perform a serviceability check Components that fail the serviceability ch...

Page 219: ..._____________________ NOTE This inspection must be accomplished after helicopter is suspected of receiving a lightning strike LIGHTNING STRIKE NOTE In all of the following instances if significant dam...

Page 220: ...errelated group Make entries in component records to cross reference part and serial numbers of other drive system components removed for evaluation a Inspect main rotor blades Blades that exhibit sev...

Page 221: ...rbox and return for overhaul State lightning strike as reason for removal h Check auxiliary fins for evidence of burning or debonding i lnspect tailboom fitting for indication of arcing burns around m...

Page 222: ...g strike as reason for removal c Remove transmission top case and inspect for entry and exit of lightning strike Special attention should be given to the planetary pinion and sun gear ring gear spiral...

Page 223: ...oothly reassemble gearbox and return it to limited service After 5 hours remove chip detector and inspect for chips If no chip indications are found return gearbox to full service If chip indications...

Page 224: ...assembly Replace the affected hardware BHT 206L CR O 2 If no indications are found reassemble the swashplate assembly and return to service h Inspect tailboom horizontal stabilizer auxiliary fins and...

Page 225: ...OPTER S N __________ _________________________ REGISTRY NO ____________ _________________________ TOTAL TIME _______________________________________ SIGNATURE _______________ _________________________...

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Page 227: ...HEDULE FOR SOME KIT COMPONENTS AND OR PARTS IS NOT COVERED IN THIS SCHEDULE REFER TO APPLICABLE SERVICE INSTRUCTIONS FOR KIT COMPONENTS SCHEDULE NOTE Refer to paragraph 5 6 for information on inspecti...

Page 228: ...hours HYDRAULIC SYSTEM Hydraulic Servo Actuators 206 076 062 001 1200 hours Hydraulic Servo Actuators 206 076 062 003 005 101 3600 hours POWER PLANT Turboshaft Engine 250 C30P Refer to Rolls Royce 25...

Page 229: ...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 Lette...

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