Service Letter Index

NumberTitleAircraft Affected
SL-1968-1Availability of Service Bulletins and Service Letters
SL-1969-1AControl System Improvements, Bungee Mounting & Rudder BearingAA1 (See List)
SL-1970-1Canopy Attach Screw InspectionAA1-0001 thru AA1-0032
SL-1970-3Wheel Fairing InstallationAA1 (All)
SL-1970-4Canopy ImprovementsAA1 (All)
SL-1970-5Landing Gear InspectionAA1 (All)
SL-1971-4General System Improvements (Seat, Canopy, Gear, etc)AA1, AA1A (See List)
SL-1971-5Cabin Floor Inspection and ModificationAA1, AA1A (See List)
SL-1971-7Rudder/Elevator Rib Rivnut InspectionAA1, AA1A (See List)
SL-1971-8Defroster Outlet Design ImprovementAA1, AA1A (See List)
SL-1971-9Battery Box Cover ModificationAA1, AA1A (See List)
SL-1971-11Bungee InspectionAA1, AA1A (All)
SL-1971-12Carburetor Air Valve Screw InspectionAA1, AA1A (All)
SL-1971-13General Improvements/Relocations/InstallationsAA1, AA1A, AA5(See List)
SL-1972-1Propeller Care and Operation LimitsAA1, AA1A (All)
SL-1972-2Rudder RiggingsAA1, AA1A (All)
SL-1972-6Fuel Quantity and Fuel Quick Drain PlacardsAA1A, AA1B, AA5 (See List)
SL-1972-8ACanopy Trim RetrofitAA5-0002 thru AA5-0154
SL-1974-2Bondline Inspection Procedures(All)
SL-1974-3Flap, Nose Strut, Torque Tube Repair, Avco LycomingAA1, AA1A, AA1B, AA5 (See List)
SL-1974-4General Modification/Installations/ImprovementsAA1, AA1A, AA1B (See List)
SL-1974-5Sealing/Improvement/Replacement/ProtectionAA5 (See List)
SL-1974-6Buss Bar/Bearing Collar ClearanceAA1B, AA5 (See List)
SL-1974-7Parking Brake RiggingAA1, AA1A, AA1B, AA5 (All)
SL-1975-1Improved Anti-Shimmy WasherAA1, AA1A, AA1B, AA5, AA5B (See List)
SL-1975-2Replacement Batteries, Battery Box Cover InspectionAA1, AA1A, AA1B, AA5, AA5B (See List)
SL-1975-3Improved Front Seat BottomAA5, AA5B (See List)
SL-1975-4Landing Light ReplacementAA1, AA1A, AA1B, AA5 (See List)
SL-1975-5Vendor Service PublicationsAA1, AA1A, AA1B, AA5, AA5B (All)
SL-1975-6Spinner Bulkhead PreloadAA5B-0001 thru AA5B-0040
SL-1975-7Improved Fuel Level VisibilityAA1, AA1A, AA1B (All)
SL-1975-8Flap Bondline InspectionAA5, AA5A, AA5B (See List)
SL-1975-9Spark Plug Lead Fouling(All)
SL-1975-10Parking Brake ImprovementAA1, AA1A, AA1B, AA5, AA5A, AA5B (See List)
SL-1975-11Exhaust Stack/Cowl ClearanceAA5B-0001 thru AA5B-0192
SL-1976-1Telex Microphone ReplacementAA1B, AA5, AA5A, AA5B (See List)
SL-1976-2Vendor Service PublicationsAA1, AA1A, AA1B, AA5, AA5B (All)
SL-1977-1Engine Primer O-Ring ReplacementAA1, AA1A, AA1B, AA5, AA5A, AA5B (See List)
SL-1977-2Magneto Lead Isolation and Routing(All)
SL-1977-3Canopy Lock Release Lever PlacardAA5, AA5A, AA5B (See List)
SL-1977-4Replacement of Induction Air Filter AssemblyAA5B-0001 thru AA5B-0549
SL-1978-1Improved Sunvisor MaterialAA5A, AA5B – All Equipped
SL-1978-2AAA5 Series Fuel Sump Tank RepairAA5, AA5A, AA5B (All)
SL-1978-3New Service and Accessory KitsAA1, AA1A, AA1B, AA5, AA5A, AA5B (See List)
SL-1978-4Narco Avionics Service Bulletin ELT-10 #10AA1C, AA5A, AA5B (See List)
SL-1978-5Upholstery Replacement/Herculon MaterialAA1B, AA5, AA5A, AA5B (See List)
SL-1979-2Carburetor Mixture Control RetainerAA5B (All)
SL-1979-3Improved Method of Sealing Accelerator Pump and Economizer Rods
to reduce Throttle Friction
AA5B with Carburetor up to and including CH-17-2426
SL-1979-4TCP Fuel AdditiveAA1, AA1A, AA1B, AA1C, AA5, AA5A, AA5B (All)
SL-1980-1Service Kit SK-150, Autopilot ReactivationAA5, AA5A, AA5B (All)
SL-1981-1Replacement of Induction Air FilterAA1, AA5, AA5A, AA5B (See List)
SL-1993-1Outboard Bearing Bracket AssemblyAA5, AA5A, AA5B (All)
SL-1993-3PlacardsAA5B, AG5B (All)
SL-2002-1Fuel Gauge Wire RoutingAG5B 10201-10211
SL-2003-3Outboard Wing Spar Attach BoltsAG5B (See List)

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