Comanche and Twin Comanche Service Letters #
Listing from 762-332: Service Bulletin and Service Letter Index, July 31, 2023 Revision
Available from Piper directly.
Number | Subject | Models Affected | Date | Part/Kit No. | A.D. No.1 | ATA Code | Grid |
---|---|---|---|---|---|---|---|
177 | Firewalls | All PA-24 Models | 8/10/51 | 13B13 | |||
207 | Oil Quick Drain Valve Assembly, Part No 12956-04 | PA-24 | 6/18/53 | 13C4 | |||
283A | Inspection Forms 100/500/1000 Hour | PA-24 | 2/26/58 | 500 | 13E24 | ||
295A | Aircraft Finishes | PA-24, PA-30 | 1/3/64 | 13F12 | |||
299 | Cabin Door Lower Hinge Reinforcement, Cabin Door Holder And Landing Gear Oil Level Instructions | PA-24-180, PA-24-250 | 6/10/58 | ** 2 | 5210 | 13F15 | |
301 | PA 24 Comanche Landing Gear | PA-24 | 8/12/58 | 3200 | 13F20 | ||
302 | Fuel Gauge Ground Wire | PA-24-180, PA-24-250 | 8/19/58 | 2840 | 13F21 | ||
303A | Aircraft Finish | PA-24 | 9/23/59 | 5300 | 13F23 | ||
305 | Miscellaneous Modifications; Door Latch, Oil Separator Inlet Hose, Landing Gear Retraction Tube Arm | PA-24-180, PA-24-250 | 10/1/58 | ** 2 | 58-25-05 | 5200, 7920, 3230 | 13G14 |
310 | Locking of Landing Gear Motor Release Arm | PA-24-180, PA-24-250 | 11/10/58 | 3230 | 13H1 | ||
311 | PA-24 1959 Owners Handbook | PA-24 | 11/22/58 | General | 13H3 | ||
312 | Tooling - Piper Autocontrol | PA-24 | 11/24/58 | ** 2 | 2210 | 13H4 | |
314A | Landing Gear Warning System | PA-24-180, PA-24-250 | 6/8/59 | 754-221, 754-217 | 3260 | 13H6 | |
315 | PA-24 Comanche Landing Gear Transmission Assembly | PA-24 | 2/4/59 | 3200 | 13H7 | ||
316 | Cabin Sealing | PA-24-180, PA-24-250 | 4/7/59 | ** 2 | 5300 | 13H16 | |
317 | 50 Ampere Generator Installation | PA-24-180, PA-24-250 | 4/6/59 | 754-230 | 2400 | 13H18 | |
321 | Piper Autocontrol | PA-24 | 7/8/59 | 2210 | 13H22 | ||
323 | Defroster Operation | PA-24-180, PA-24-250 | 11/23/59 | 2140 | 13H24 | ||
324C | Maintenance And Inspection of Exhaust Systems And Heat Exchanger | PA-24 | 1/22/69 | 62-26-05, 68-05-01 | 7810 | 13I1 | |
325 | Front Cabin Window Defroster Kit | PA-24-180, PA-24-250 | 12/24/59 | 754-293 | 2140 | 13I9 | |
333C | Radio Shelf Capacities | All PA-24 | 1/28/63 | 3400 | 13J13 | ||
339 | Insulation of Wiring At Starter Solenoid Switch | PA-24-180, PA-24-250 | 7/12/60 | 13586-94 | 8010 | 13J21 | |
345 | Hartzell Service Bulletin #75 - Inspection of Hartzell Governor For Presence of Vent Hole | PA-24-250 | 9/14/60 | 6110 | 13K5 | ||
346 | Relocation of Safety Belt Buckle - Right Front Seat Only | PA-24-180, PA-24-250 | 9/29/60 | 5340 | 13K8 | ||
347 | Installation of Dry Vacuum Pump, Exhaust Tube | PA-24-180, PA-24-250 | 12/2/60 | 754-358 | 3710 | 13K9 | |
352 | Modification of Windshield Defroster System | PA-24-180, PA-24-250 | 12/28/60 | 754-380 | 2140 | 13K14 | |
356 | Installation of Landing Gear Retraction System, 30 Amp Circuit Protector | PA-24-180, PA-24-250 | 3/31/61 | 454-661 | 63-27-03 | 3230 | 13K21 |
360 | Flap Retractor | PA-24-180, PA-24-250 | 9/5/61 | 754-413 | 2750 | 13L3 | |
364A | Rubatex Blocks In Detached Or Loose Wing Panels | PA-24-180, PA-24-250 | 3/14/62 | 5700 | 13L15 | ||
365 | Special Bolt For Nose Gear Drag Link | PA-24-180, PA-24-250 | 1/3/62 | 22066-00 | 3200 | 13L17 | |
366 | Nose Gear Clevis | PA-24-180, PA-24-250 | 1/3/62 | 20859-03 | 65-25-03 | 3220 | 13L19 |
367 | Caps, Fuel Cell, “Thermos Bottle” Type | PA-24-180, PA-24-250 | 2/1/62 | 68-13-03 | 2810 | 13L21 | |
368 | Lycoming Service Instruction #1049 Dated 12/29/61 | PA-24-250 | 2/7/62 | ** 2 | 7200 | 14A1 | |
370 | Modification To Engine Breather Line | PA-24, PA-24-250 | 2/23/62 | 7200 | 14A7 | ||
372 | Landing Gear Switch | PA-24-250 | 3/8/62 | 3230 | 14A10 | ||
373 | Dry Vacuum Pumps (Airborne Mechanisms) Models 113A1 And 113A5, Installation of Oil Shields On | PA-24-180, PA-24-250 | 3/29/62 | 756-143 | 3710 | 14A11 | |
379 | Landing Gear Safety Switch Harness | PA-24-180, PA-24-250 | 8/10/62 | 754-475 | 64-22-03 | 3200 | 14A20 |
380 | Door Hinges, Main Landing Gear, And Nose Gear Door Hinge Bushings | PA-24-180, PA-24-250 | 8/8/62 | ** 2 | 3210 | 14A22 | |
382 | Redesigned Landing Gear Selector Switch Knob | PA-24-250 | 9/27/62 | ** 2 | 3200 | 14B1 | |
393 | Replacement of Bendix Fuel Pump | PA-24-250 | 2/1/63 | 481-686 | 2820 | 14B22 | |
395 | Flap Retraction Springs | PA-24-250 | 2/11/63 | 83302-54 | 2750 | 14C1 | |
397 | Inspection of Alternate Air Door Hinge Pin | PA-24-250 | 2/21/63 | 7160 | 14C5 | ||
404 | Inspection of Pitch Servo Assembly Chain Adjustment Screw Altimatic And Altimatic II | PA-24-180, PA-24-250 | 9/16/63 | ** 2 | 2210 | 14C17 | |
408 | Installation of Fuel Valve Control Stop | PA-30 | 10/9/63 | 756-774 | 7320 | 14D1 | |
409 | Replacement of Nose Gear Retraction Tube | PA-30 | 10/9/63 | 21109-05 | 64-16-06 | 3230 | 14D4 |
411 | Drain Holes In PA-30 Cowling | PA-30 | 10/17/63 | 7110 | 14D8 | ||
412A | Muffler And Tailpipe Support | PA-24-250 | 5/6/64 | 756-775 | 68-05-01 | 7810 | 14D11 |
414 | Modification of Right Side Exhaust Stack | PA-24-250 | 11/27/63 | 756-777, 756-778 | 7810 | 14D15 | |
415 | Sealing of The Nose Wheel Well | PA-30 | 12/3/63 | 3240 | 14D18 | ||
416 | Heater Valve Friction Spring Installation | PA-30 | 12/3/63 | 756-779 | 2140 | 14D20 | |
417 | Replacement of Fuel Injector Inlet Screens | PA-30 | 12/16/63 | 756-782 | 7310 | 14E1 | |
418 | Replacement of Fuel Flow Gauge | PA-30 | 12/16/63 | 24536-00 | 7330 | 14E3 | |
419 | Inspection of Heater Air Distribution Box Attachment Screws | PA-30 | 2/24/64 | ** 2 | 2140 | 14E4 | |
420A | Removal of Vanes From Throat of Carburetor Air Box | PA-24-250 | 3/10/72 | 64-10-04 | 7200 | 14E6 | |
422 | Rework of Propeller Spinner Assembly | PA-30 | 3/10/64 | 756-796 | 6110 | 14E11 | |
424 | Installation of “Generators On” Placard | PA-30 | 4/20/64 | ** 2 | 2430 | 14E15 | |
425 | Lycoming Service Bulletin No. 298 | PA-24-180, PA-24-250 | 5/13/64 | ** 2 | 7200 | 14E17 | |
426 | Propeller Flange Inspection, Crankshaft (Per Lycoming Service Bulletin No. 300) And Propeller Blades, Inspection of (Per Hartzell Service Bulletin No. 86) | PA-30 | 6/26/64 | 6110 | 14E22 | ||
430 | Inspection of Nose Gear Drag Link Assembly | PA-30 | 8/17/64 | 3220 | 14F6 | ||
431 | Insulation of Motor Mounts | PA-24-250 | 9/2/64 | 756-831 | 7120 | 14F8 | |
433 | Installation of Placard, (Cowl Flaps Open) | PA-24-400, PA-30 | 9/9/64 | 755-881 | 7110 | 14F12 | |
434 | Lycoming Service Instruction #1110 | PA-24-250 | 9/30/64 | 25006-00 | 7200 | 14F14 | |
435 | Relocation of Nose Wheel Steering Tube Boot | PA-24-250 | 9/30/64 | 21378-00 | 3250 | 14F15 | |
437 | Replacement of Fuel Gauge Assembly | PA-24-400 | 11/4/64 | 450-771 | 2820 | 14F19 | |
439 | Lycoming Service Bulletin No.300A | PA-30 | 11/13/64 | 6110 | 14G1 | ||
440 | Engine Compartment Changes | PA-24-400 | 12/3/64 | ** 2 | 7200 | 14G4 | |
444 | Installation of Special Steel Fittings On Auxiliary Fuel Pumps | PA-24-250 | 2/24/65 | 751-268 | 2810 | 14G9 | |
445 | Installation of Nose Gear Drag Link Clevis Reinforcement Bracket | PA-24-180, PA-24-250 | 4/21/65 | 756-911 | 3270 | 14G11 | |
446 | Fuel Leakage At the Fuel Cell Gauge | PA-24-400 | 3/1/65 | 756-902 | 2810 | 14G13 | |
447 | Inspection of Landing Gear Transmission Retract Spring | All PA-24, PA-30 | 3/26/65 | ** 2 | 3230 | 14G14 | |
449A | Fuel Cells | PA-24-180, PA-24-250, PA-24-400, PA-30 | 2/18/69 | 2810 | 14G16 | ||
451 | Fuel System Purging Valve | PA-24-400 | 5/14/65 | 756-922 | 66-30-07 | 2810 | 14G18 |
453 | Engine Mount Refinishing | PA-24-400 | 8/23/65 | 756-306 | 7110 | 14G19 | |
459 | Mixture Control Cable Shield | PA-24-400 | 10/6/65 | 25079-00 | 7320 | 14H8 | |
460 | Revision To PA-30 Service Manual And Owner’s Handbook | PA-30 | 9/17/65 | 3260 | 14H10 | ||
461 | Inspection of Propeller Blades | PA-30 | 9/28/65 | 6110 | 14H11 | ||
464A | Bendix RS Fuel Injection | PA-24-250, PA-24-260, PA-30 | 11/12/65 | ** 2 | 7310 | 14I1 | |
465 | Airworthiness Directive No. 65-25-03 | PA-24, PA-24-250 | 12/20/65 | 1617 | 14I3 | ||
469 | Replacement of Allowance Placard, Baggage/Passenger | PA-24-260 | 2/11/66 | 756-997 | 5430 | 14I7 | |
470 | Starter Vibrating | PA-24-400 | 4/1/66 | 492-671 | 8010 | 14I8 | |
477 | FAA Airworthiness Directive No. 66-12-2 (Temporary Revision To Airspeed Limits) | PA-30 | 5/18/66 | 3410 | 14I19 | ||
478 | Inspection of Baggage Door Latch Enlargements | PA-24-260 | 6/13/66 | 66-18-04 | 5210 | 14I22 | |
481 | Muffler And Tailpipe Support | PA-24-250 | 9/15/66 | 757-058 | 68-05-01 | 7810 | 14J2 |
486A | Cylinder Head Temperature Probe Location | PA-24 | 4/16/68 | 7720 | 14J13 | ||
490 | Rajay Corporation Service Letter No. 10 (Relocation of Turbocharger Low Oil Pressure Warning Light Wire) | PA-30 | 6/28/67 | 757-312 | 7930 | 14J16 | |
511 | Modification To The Auxiliary Power Receptacle Installation | PA-24-260, PA-39 | 8/30/68 | 760-181, 760-711 | 2400 | 14K23 | |
516 | Modification Fuel Cell Vent System | PA-24-180, PA-24-250 | 3/7/69 | 760-277, 760-281 | 68-13-03 | 2810 | 14L11 |
518 | Modification of Exhaust Mufflers | PA-24-260 | 1/22/69 | 760-289 | 68-05-01 | 7820 | 14L14 |
525 | Addition of Lock Washers To Electrical Switch Installations | PA-30 | 2/28/69 | ** 2 | 2400 | 15A8 | |
532 | Voltage Regulator Component Grounding | PA-30 | 7/7/69 | 760-332 | 2430 | 15B2 | |
539 | Fuel Selector Valve Control Handle Replacement | PA-30 | 2/18/70 | 760-356, 760-357 | 2820 | 15B20 | |
541 | Fuselage Nose Cone Drain Holes | PA-30 | 12/4/69 | 5350 | 15C1 | ||
542 | Control Surface Travel And Cable Tension | PA-30 | 2/17/70 | 2700 | 15C3 | ||
543 | Induction System Drain Tube Relocation | PA-24-260 “C” | 11/17/69 | 760-351 | 7160 | 15C5 | |
546A | Nose Gear Push-Pull Rod Assembly | PA-24-180, PA-24-250, PA-24-400 | 3/10/70 | 757-352 | 3250 | 15C12 | |
549 | New Owner’s Handbook | PA-30 | 3/20/70 | ** 2 | General | 15C19 | |
552 | Counter Rotating Power Plant Conversion-Kit | PA-30 | 5/1/70 | 760-368 | 7100 | 15D3 | |
556A | Turbocharger Waste Gate Return Spring | PA-30, PA-39 | 9/21/70 | ** 2 | 8120 | 15D17 | |
557 | Rajay Oil Scavenge Pump | PA-30 | 6/16/70 | ** 2 | 7250 | 15D19 | |
558 | Air Flow Modification Kit | PA-30 | 7/1/70 | 760-409 | 2700 | 15E1 | |
564 | Revised Hartzell Propellers | PA-30, PA-39 | 9/28/70 | ** 2 | 6120 | 15E18 | |
565 | Rear Cabin Dome Light Mounting Screw | PA-24-260, PA-30, PA-39 | 10/13/70 | 3320 | 15F1 | ||
566 | Autopilot Servo Spacer Bushing Installation | PA-24-260, PA-30, PA-39 | 11/25/70 | 760-472 | 2210 | 15F3 | |
569 | Engine Compartment Modifications | PA-24-260 | 12/28/70 | 760-463 | 7200 | 15F14 | |
574 | Revision To Emergency Gear Checklist | PA-24-260, PA-30, PA-39 | 3/22/71 | 3200 | 15F20 | ||
575 | Landing Gear (Nose) System Inspection | PA-30, PA-39 | 4/8/71 | 3220 | 15F23 | ||
578B | Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation, Lycoming Service Bulletin No. 342F | PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 7/27/11 | N/A | 2011-26-04 | 7310 | |
584 | 90 Amp Alternator Circuit Breaker Switch Inspection | PA-30, PA-39 | 7/8/71 | 2430 | 15H4 | ||
589 | Stainless Steel Fuel Selector Valve Housing | PA-30 | 8/18/71 | 757-187 | 83-10-01 | 2820 | 15H10 |
595 | Wing Flap System Maintenance | PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 10/11/71 | 2750 | 15I1 | ||
596A | Nose Landing Gear System Product Advancement Information | All PA-24, PA-30, PA-39 | 9/5/75 | ** 2 | 3220 | 15I3 | |
598 | Adjustable Duct Micro Switch Inspection | PA-39 | 11/16/71 | 487-940 | 2140 | 15I9 | |
599 | Exhaust Wing Panel Corrosion Protection | PA-30, PA-39 | 11/23/71 | 5750 | 15I10 | ||
605 | Reissue of Owner’s Handbook | PA-24-260T | 2/7/72 | ** 2 | 8100 | 15J1 | |
609 | Control Surfaces Inspection And Maintenance Guidelines | All Models | 2/21/72 | 5500 | 15J21 | ||
610 | Tail Control Surface Inspection, Maintenance And Repair Information PA-24 Comanche Service Manual Temporary Revision TR 720127 | All PA-24 | 2/28/72 | ** 2 | 2700 | 15J23 | |
617B | Piper Automatic Locator Transmitter Replacement | PA-24, PA-39 | 8/30/73 | 72-22-03 | 2560 | 15K18 | |
623 | Inspection of Rajay Alternate Air Valve Bracket | PA-30, PA-39 T.C. | 8/9/72 | ** 2 | 7160 | 15L14 | |
627 | Propeller Installation | PA-24-260, PA-30, PA-39 | 9/1/72 | 6100 | 16A1 | ||
633 | Inspection And Repair of Flood Exposed Airplanes | PA-24, PA-39 | 10/9/72 | 5300 | 16A18 | ||
636 | Prestolite Service Bulletin No. ASM-8 (Alternator Fan Replacement) | PA-24, PA-30 | 10/24/72 | ** 2 | 2430 | 16B2 | |
637 | Rajay Service Letter No. 19, Dated September 5, 1972 | PA-30, PA-39 T.C. | 10/31/72 | ** 2 | 7160 | 16B5 | |
638A | Edo-Aire Mitchell Service Letter No. ML-35 (Servo Lubrication - Rack And Pinion Type Servos) | PA-24, PA-30 | 2/8/73 | 2210 | 16B7 | ||
642 | Revised Alternator Inoperative Warning Light | PA-39 | 2/19/73 | 760-711 | 2430 | 16B15 | |
648 | Battery Ground Inspection And Modification | PA-24-260 “C” | 3/8/73 | 2430 | 16C2 | ||
650 | Inspection of Transmission Assemblies, Landing Gear Retraction And Flap Control | PA-24-180, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 9/27/73 | ** 2 | 3230, 2750 | 16C5 | |
651 | Rudder Balance Weight Arm Attachment Angle Installation Kit | PA-24-180, PA-24-250, PA-24-260 | 2/27/73 | 760-732 | 2720 | 16C10 | |
653 | Throttle Lever And Shaft, Serrated (Reference Avco Lycoming Service Instruction No. 1265 Dated December 15, 1972) | PA-24, PA-30 | 4/9/73 | ** 2 | 7610 | 16C14 | |
657 | Fuel Selector Valve Control Handle Modification | PA-30, PA-39 | 9/13/73 | 760-788 | 2820 | 16D3 | |
665A | Intake Valves; Rotator Type (Reference Avco Lycoming Service Instruction No. 1280 A. 9/28/73) | PA-24-400 | 10/24/73 | ** 2 | 7160 | 16D16 | |
667A | Stabilator Attachment Bolts | PA-24-260, PA-24-400, PA-30 | 30/4/74 | ** 2 | 74-13-03 | 2740 | 160 |
679 | Fuselage Aft Bulkhead Inspection | PA-30, PA-39 | 1/21/74 | 760-783 | 74-16-08 | 5310 | 16F2 |
682B | Reference Lycoming Service Bulletin 367D | PA-24-250, PA-24-400, PA-30 | 4/19/74 | ** 2 | 7230 | 16F9 | |
686 | Inspection of Fuel Pressure Hose Assembly | PA-24-250, PA-24-260 | 1/3/74 | 17766-43 | 7330 | 16F20 | |
687 | Stabilator Modification | PA-24-250, PA-24-260 | 6/19/74 | 760-747 | 72-22-05 | 2740 | 16F23 |
695 | Roll Servo Inspection, Maintenance And Sheer Pin Installation (Reference Attached Edo-Aire Mitchell Service Letter No. ML-38 Dated March 18, 1974) | PA-24, PA-30 | 5/3/74 | ** 2 | 2210 | 16G13 | |
696 | Control Surface Balancing Recommendation | PA-24, PA-30, PA-39 | 5/2/74 | 2700 | 16G20 | ||
707 | Flyball Assembly To Improve RPM Control. Modified (Reference Hartzell Service Letter No. 75, Dated November 16, 1973) | PA-24, PA-30, PA-39 | 2/27/74 | ** 2 | 7710 | 16I11 | |
718 | Bendix Magneto Bulletin No. 566 (Reference Avco Lycoming Service Bulletin 373, Dated March 22, 1974) | PA-24 | 5/31/74 | ** 2 | 7410 | 16J18 | |
751 | Fin Front Spar Modification | PA-24-180, PA-24-250, PA-24-260, PA-24-400 | 7/7/75 | 5520 | 17A23 | ||
758 | Bendix Ignition Switches, Inspection of; Ref: Bendix Service Bulletin No. 583 | PA-24-180, PA-24-250, PA-24-260, PA-24-400 | 5/17/76 | 761-065V | 7410 | 17C2 | |
772 | Stabilator Attachment Bolts | PA-39 | 2/16/76 | ** 2 | 74-13-03 | 2740 | 17E4 |
777 | Fin Front Spar Modification | PA-30, PA-39 | 6/16/76 | 76-18-05 | 2740 | 17E12 | |
782B | Landing Gear Manual Extension System And Nose Gear Down Lock Spring Installation | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 12/1/77 | ** 2 | 77-13-21 | 3230 | 17E23 |
787 | Aileron Spar Inspection And Reinforcement | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 12/1/76 | 760-914 | 77-08-01 | 5750 | 17F17 |
850 | Aileron Nose Rib Inspection/Reinforcement | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 4/18/79 | 79-20-10 | 5750 | 17L8 | |
851 | PART A - Fuel Valve Internal Leak Check | PA-24-400, PA-30, PA-39 | 8/31/78 | ** 2 | 79-12-08 | 2810 | 17L11 |
851 | PART B - Fuel System Draining Procedure-Water Contamination | PA-30, PA-39 | 8/31/78 | ** 2 | 79-12-08 | 2810 | 17L12 |
851 | PART C - Fuel System Draining Procedures-Water Contamination | PA-24-400 | 8/31/78 | 79-12-08 | 2810 | 17L14 | |
1041A | Accident/Incident Reporting | All | 3/17/2020 | N/A | N/A | ||
1052 | Life Limited Parts Marking and Disposition | All | 5/21/02 | N/A | 510 | 19L19 | |
1069 | Flight Control Cable Terminal Corrosion Inspection | All | 3/31/03 | N/A | CE-02-05 (SAIB) | 2702 | 20C2 |
1093B | Electrical Contactor Replacement Kit | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 11/28/17 | 88371 | 2400 | ||
1116A | Contactor Maintenance | PA-24, PA-24-250, PA-24-260, PA-24-400, PA-30, PA-39 | 3/15/2019 | N/A | 2435 | ||
1135 | Control Cable / Pulley Inspections | All | 10/19/2010 | N/A | 5720 | ||
1141 | Gascolator Maintenance Procedures | PA-24, PA-24-250, PA-24-260, PA-24-400 | 4/27/2011 | MS20995-C32 | 2800 | ||
1265 | Flight Control System Checks | All | 8/6/2019 | N/A | 2700 | ||
1274 | Hartzell Propeller Preferred Grease | All | 1/6/2020 | NYCO GN 3058 | 6110 | ||
1280 | Rudder Pedal And Bar Assembly | All | 2/14/2020 | N/A | 2720 |