Factory service letters and related notices.
Documents in this section: 157
Back to Service Letters
- SL 0177 - Firewalls
- SL 0207 - Oil Quick Drain Valve Assembly, Part No 12956-04
- SL 0283A - Inspection Forms 100/500/1000 Hour
- SL 0299 - Cabin Door Lower Hinge Reinforcement, Cabin Door Holder And Landing Gear Oil Level Instructions
- SL 0301 - PA 24 Comanche Landing Gear
- SL 0302 - Fuel Gauge Ground Wire
- SL 0303A - Aircraft Finish
- SL 0310 - Locking of Landing Gear Motor Release Arm
- SL 0311 - PA-24 1959 Owners Handbook
- SL 0312 - Tooling - Piper Autocontrol
- SL 0314A - Landing Gear Warning System
- SL 0315 - PA-24 Comanche Landing Gear Transmission Assembly
- SL 0316 - Cabin Sealing
- SL 0317 - 50 Ampere Generator Installation
- SL 0321 - Piper Autocontrol
- SL 0323 - Defroster Operation
- SL 0325 - Front Cabin Window Defroster Kit
- SL 0333C - Radio Shelf Capacities
- SL 0339 - Insulation of Wiring At Starter Solenoid Switch
- SL 0345 - Hartzell Service Bulletin #75 - Inspection of Hartzell Governor For Presence of Vent Hole
- SL 0346 - Relocation of Safety Belt Buckle - Right Front Seat Only
- SL 0347 - Installation of Dry Vacuum Pump, Exhaust Tube
- SL 0352 - Modification of Windshield Defroster System
- SL 0360 - Flap Retractor
- SL 0364A - Rubatex Blocks In Detached Or Loose Wing Panels
- SL 0365 - Special Bolt For Nose Gear Drag Link
- SL 0368 - Lycoming Service Instruction #1049 Dated 12/29/61
- SL 0370 - Modification To Engine Breather Line
- SL 0372 - Landing Gear Switch
- SL 0373 - Dry Vacuum Pumps (Airborne Mechanisms) Models 113A1 And 113A5, Installation of Oil Shields On
- SL 0380 - Door Hinges, Main Landing Gear, And Nose Gear Door Hinge Bushings
- SL 0382 - Redesigned Landing Gear Selector Switch Knob
- SL 0393 - Replacement of Bendix Fuel Pump
- SL 0395 - Flap Retraction Springs
- SL 0397 - Inspection of Alternate Air Door Hinge Pin
- SL 0404 - Inspection of Pitch Servo Assembly Chain Adjustment Screw Altimatic And Altimatic II
- SL 0408 - Installation of Fuel Valve Control Stop
- SL 0411 - Drain Holes In PA-30 Cowling
- SL 0414 - Modification of Right Side Exhaust Stack
- SL 0415 - Sealing of The Nose Wheel Well
- SL 0416 - Heater Valve Friction Spring Installation
- SL 0417 - Replacement of Fuel Injector Inlet Screens
- SL 0418 - Replacement of Fuel Flow Gauge
- SL 0419 - Inspection of Heater Air Distribution Box Attachment Screws
- SL 0422 - Rework of Propeller Spinner Assembly
- SL 0424 - Installation of "Generators On" Placard
- SL 0425 - Lycoming Service Bulletin No. 298
- SL 0426 - Propeller Flange Inspection, Crankshaft (Per Lycoming Service Bulletin No. 300) And Propeller Blades, Inspection of (Per Hartzell Service Bulletin No. 86)
- SL 0430 - Inspection of Nose Gear Drag Link Assembly
- SL 0431 - Insulation of Motor Mounts
- SL 0433 - Installation of Placard, (Cowl Flaps Open)
- SL 0434 - Lycoming Service Instruction #1110
- SL 0435 - Relocation of Nose Wheel Steering Tube Boot
- SL 0437 - Replacement of Fuel Gauge Assembly
- SL 0439 - Lycoming Service Bulletin No.300A
- SL 0440 - Engine Compartment Changes
- SL 0444 - Installation of Special Steel Fittings On Auxiliary Fuel Pumps
- SL 0445 - Installation of Nose Gear Drag Link Clevis Reinforcement Bracket
- SL 0446 - Fuel Leakage At the Fuel Cell Gauge
- SL 0447 - Inspection of Landing Gear Transmission Retract Spring
- SL 0453 - Engine Mount Refinishing
- SL 0459 - Mixture Control Cable Shield
- SL 0460 - Revision To PA-30 Service Manual And Owner's Handbook
- SL 0461 - Inspection of Propeller Blades
- SL 0464A - Bendix RS Fuel Injection
- SL 0465 - Airworthiness Directive No. 65-25-03
- SL 0469 - Replacement of Allowance Placard, Baggage/Passenger
- SL 0470 - Starter Vibrating
- SL 0477 - FAA Airworthiness Directive No. 66-12-2 (Temporary Revision To Airspeed Limits)
- SL 0486A - Cylinder Head Temperature Probe Location
- SL 0490 - Rajay Corporation Service Letter No. 10 (Relocation of Turbocharger Low Oil Pressure Warning Light Wire)
- SL 0511 - Modification To The Auxiliary Power Receptacle Installation
- SL 0525 - Addition of Lock Washers To Electrical Switch Installations
- SL 0532 - Voltage Regulator Component Grounding
- SL 0539 - Fuel Selector Valve Control Handle Replacement
- SL 0541 - Fuselage Nose Cone Drain Holes
- SL 0542 - Control Surface Travel And Cable Tension
- SL 0543 - Induction System Drain Tube Relocation
- SL 0546A - Nose Gear Push-Pull Rod Assembly
- SL 0549 - New Owner's Handbook
- SL 0552 - Counter Rotating Power Plant Conversion-Kit
- SL 0556A - Turbocharger Waste Gate Return Spring
- SL 0557 - Rajay Oil Scavenge Pump
- SL 0558 - Air Flow Modification Kit
- SL 0564 - Revised Hartzell Propellers
- SL 0565 - Rear Cabin Dome Light Mounting Screw
- SL 0566 - Autopilot Servo Spacer Bushing Installation
- SL 0569 - Engine Compartment Modifications
- SL 0574 - Revision To Emergency Gear Checklist
- SL 0575 - Landing Gear (Nose) System Inspection
- SL 0584 - 90 Amp Alternator Circuit Breaker Switch Inspection
- SL 0595 - Wing Flap System Maintenance
- SL 0596A - Nose Landing Gear System Product Advancement Information
- SL 0598 - Adjustable Duct Micro Switch Inspection
- SL 0599 - Exhaust Wing Panel Corrosion Protection
- SL 0605 - Reissue of Owner's Handbook
- SL 0609 - Control Surfaces Inspection And Maintenance Guidelines
- SL 0610 - Tail Control Surface Inspection, Maintenance And Repair Information PA-24 Comanche Service Manual Temporary Revision TR 720127
- SL 0623 - Inspection of Rajay Alternate Air Valve Bracket
- SL 0627 - Propeller Installation
- SL 0633 - Inspection And Repair of Flood Exposed Airplanes
- SL 0636 - Prestolite Service Bulletin No. ASM-8 (Alternator Fan Replacement)
- SL 0637 - Rajay Service Letter No. 19, Dated September 5, 1972
- SL 0638A - Edo-Aire Mitchell Service Letter No. ML-35 (Servo Lubrication - Rack And Pinion Type Servos)
- SL 0642 - Revised Alternator Inoperative Warning Light
- SL 0648 - Battery Ground Inspection And Modification
- SL 0650 - Inspection of Transmission Assemblies, Landing Gear Retraction And Flap Control
- SL 0651 - Rudder Balance Weight Arm Attachment Angle Installation Kit
- SL 0653 - Throttle Lever And Shaft, Serrated (Reference Avco Lycoming Service Instruction No. 1265 Dated December 15, 1972)
- SL 0657 - Fuel Selector Valve Control Handle Modification
- SL 0665A - Intake Valves; Rotator Type (Reference Avco Lycoming Service Instruction No. 1280 A. 9/28/73)
- SL 0682B - Reference Lycoming Service Bulletin 367D
- SL 0686 - Inspection of Fuel Pressure Hose Assembly
- SL 0687 - Stabilator Modification
- SL 0696 - Control Surface Balancing Recommendation
- SL 0707 - Flyball Assembly To Improve RPM Control. Modified (Reference Hartzell Service Letter No. 75, Dated November 16, 1973)
- SL 0718 - Bendix Magneto Bulletin No. 566 (Reference Avco Lycoming Service Bulletin 373, Dated March 22, 1974)
- SL 0751 - Fin Front Spar Modification
- SL 0758 - Bendix Ignition Switches, Inspection of; Ref: Bendix Service Bulletin No. 583
- SL 1041A - Accident/Incident Reporting
- SL 1052 - Life Limited Parts Marking and Disposition
- SL 1069 - Flight Control Cable Terminal Corrosion Inspection
- SL 1093B - Electrical Contactor Replacement Kit
- SL 1116A - Contactor Maintenance
- SL 1135 - Control Cable / Pulley Inspections
- SL 1141 - Gascolator Maintenance Procedures
- SL 1265 - Flight Control System Checks
- SL 1274 - Hartzell Propeller Preferred Grease
- SL 1280 - Rudder Pedal And Bar Assembly
- SL 295A - Aircraft Finishes
- SL 305 - Miscellaneous Modifications; Door Latch, Oil Separator Inlet Hose, Landing Gear Retraction Tube Arm
- SL 324C - Maintenance And Inspection of Exhaust Systems And Heat Exchanger
- SL 356 - Installation of Landing Gear Retraction System, 30 Amp Circuit Protector
- SL 366 - Nose Gear Clevis
- SL 367 - Caps, Fuel Cell, "Thermos Bottle" Type
- SL 379 - Landing Gear Safety Switch Harness
- SL 409 - Replacement of Nose Gear Retraction Tube
- SL 412A - Muffler And Tailpipe Support
- SL 420A - Removal of Vanes From Throat of Carburetor Air Box
- SL 449A - Fuel Cells
- SL 451 - Fuel System Purging Valve
- SL 478 - Inspection of Baggage Door Latch Enlargements
- SL 481 - Muffler And Tailpipe Support
- SL 516 - Modification Fuel Cell Vent System
- SL 518 - Modification of Exhaust Mufflers
- SL 578B - Fuel Line (Stainless Steel Tube Assy.) and Support Clamp Inspection and Installation, Lycoming Service Bulletin No. 342F
- SL 589 - Stainless Steel Fuel Selector Valve Housing
- SL 617B - Piper Automatic Locator Transmitter Replacement
- SL 667A - Stabilator Attachment Bolts
- SL 679 - Fuselage Aft Bulkhead Inspection
- SL 695 - Roll Servo Inspection, Maintenance And Sheer Pin Installation (Reference Attached Edo-Aire Mitchell Service Letter No. ML-38 Dated March 18, 1974)
- SL 772 - Stabilator Attachment Bolts
- SL 777 - Fin Front Spar Modification
- SL 782B - Landing Gear Manual Extension System And Nose Gear Down Lock Spring Installation
- SL 787 - Aileron Spar Inspection And Reinforcement
- SL 850 - Aileron Nose Rib Inspection/Reinforcement
- SL 851 - PART C - Fuel System Draining Procedures-Water Contamination