Service Letters| Name | Revision | Lang | Subject | Date |
|---|
| SL 2 |
|
en |
Installation of Optional Electrical Equipment in 7EC Champions | 08/26/1955 |
| SL 2 |
reissued |
en |
Installation of Optional Electrical Equipment in 7EC Champions | 02/19/1969 |
| SL 3 |
|
en |
Wing Tip Bow Repair | 10/01/1955 |
| SL 3 |
reissued |
en |
Wing Tip Bow Repair | 02/19/1969 |
| SL 4 |
|
en |
Placard Removal | 10/10/1955 |
| SL 4 |
reissued |
en |
Placard Removal | 02/19/1969 |
| SL 9 |
|
en |
Conversion of 7DC Landplane to S7DC Seaplane | 09/02/1948 |
| SL 10 |
reissued |
en |
Factory Approved Repair of No. 2-705 Control Stick Socket and No. 1-2383 Control Stick Connection Tube on 7AC, 7BCM, 7CCM and 7DC | 02/24/1969 |
| SL 11 |
reissued |
en |
Factory Installation of 1-2565 Bronze Oleo Bushings in 4-541 & 4-10001 Oleo Case Frames | 02/19/1969 |
| SL 13 |
|
en |
Conversion of 7AC to 7BCM Using a Carburetor Type Engine | 04/22/1949 |
| SL 13 |
revised |
en |
Conversion of 7AC to 7BCM Using a Carburetor Type Engine | 01/20/1960 |
| SL 14 |
|
en |
Conversion of a 7AC to 7DC Using a Carburetor Type Engine | 04/22/1949 |
| SL 14, w/Supp 1 |
revised |
en |
Conversion of a 7AC to 7DC Using a Carburetor Type Engine | 01/20/1960 |
| SL 15, w/Supp 1 |
revised |
en |
Conversion of a 7AC to 7CCm Using a Carburetor Type Engine | 01/20/1960 |
| SL 16 |
reissued |
en |
Conversion of a 7CCM (Carburetor Engine) Landplane to a Seaplane | 02/20/1969 |
| SL 17 |
reissued |
en |
Conversion of a 11AC to a 11EC Using a Carburetor Type Engine | 03/15/1962 |
| SL 20 |
|
en |
Installation - Instructions - "No-Bounce" Landing Gear Oleo Assembly | 02/20/1969 |
| SL 21 |
reissued |
en |
Cruising R.P.M. for 7CCM and S7CCM | 03/16/1962 |
| SL 23 |
|
en |
Conversion of a L1BC Landplane to a S11BC Seaplane | 07/01/1949 |
| SL 24 |
|
en |
Cruising R.P.M. for 7BCM, 7DC and S7DC | 07/06/1949 |
| SL 28 |
reissued |
en |
Installation Instructions and Parts List Kit 167 Cabin Heater | 02/19/1969 |
| SL 29 |
reissued |
en |
Conversion of 7EC Landplane to S7EC Seaplane | 02/21/1969 |
| SL 31 |
|
en |
Change of Steering Link Boots (2-1523) on Champion 7FC | 02/20/1969 |
| SL 32 |
|
en |
Spinner Backplates on 7EC S/Ns 419 through 619 and 7FC S/Ns 2 through 87 | 02/20/1969 |
| SL 35 |
reissued |
en |
Installation Approval of Fiberglass Wing Tips on all 7AC, 7BCM, 7CCM, 7DC, 7EC and 7FC | 02/21/1969 |
| SL 37 |
|
en |
Possibility of Excessive Wear on Nose Gear Positioning Stop | |
| SL 39 |
|
en |
Fuel System Vent Lines | 02/25/1969 |
| SL 42 |
|
en |
Importance of Keeping Landing gear Oleo Assemblies at the Proper Fluid Level | 03/04/1969 |
| SL 43 |
|
en |
Installation of Pee-Kay 1800 Floats on Champion 7HC | |
| SL 44 |
|
en |
Inspection of Oleo Cylinder Lower end Braze, (Main Gear Only) | 03/04/1969 |
| SL 45 |
|
en |
Installation of Wide Track Main Gear | 02/25/1969 |
| SL 46 |
|
en |
50 lb. Gross Weight Increase | 03/04/1969 |
| SL 48 |
|
en |
Installation of Hi-Energy Washer Type Taxi Spring | |
| SL 49 |
|
en |
Conversion of 7JG to 7EC | 02/24/1969 |
| SL 50 |
|
en |
Installation of Wide Track Main Gear - 7HC | 03/04/1969 |
| SL 51 |
|
en |
Landing Gear Oleo - Axle Attachment Interchangeability | 11/05/1965 |
| SL 52 |
|
en |
50 lb. Gross Weight Increase | 02/21/1969 |
| SL 54 |
|
en |
Replacement of 1-8752 Nose Gear Stop Ring | 02/26/1969 |
| SL 55 |
|
en |
Fairing Attachment Modification | 10/19/1961 |
| SL 56 |
|
en |
Conversion - Champion 7AC to 7EC ((Master Parts List)) | 04/10/1963 |
| SL 57 |
|
en |
Removal of 1-9102 Placard from Instrument Panel | 12/26/1963 |
| SL 58 |
|
en |
Removal of 2-1849-2 Swivel Hooks from 2-1849 Nylon Tie Down Lines | 02/21/1969 |
| SL 59 |
|
en |
Locking of Carb Airscoop Alternate Air Door | 02/21/1969 |
| SL 60 |
|
en |
Conversion - Champion 7EC to 7GC | 06/17/1963 |
| SL 61 |
reissued |
en |
Applicability of Various Optional Installation Items on Champion 7AC, 7BCM (L-16A), 7CCM (L-16B), 7DC and 7EC | 03/05/1969 |
| SL 62, w/Supp 1 |
|
en |
Replacement of Engine Mount Part No. 7-1181 | 03/06/1969 |
| SL 63 |
|
en |
Installation of Optional Clumb Propeller McCauley 1A100MCM6948 | 12/16/1963 |
| SL 65 |
|
en |
Use of 5-294 Front Wing Strut on All Model 7 Aircraft | 03/18/1964 |
| SL 66 |
|
en |
Inspection and/or Replacement of Exhaust Manifold-Extension Connection Clamp and Extension Flexible Supports | 06/16/1964 |
| SL 67 |
|
en |
Possible Leakage of Battery Acid During Acrobatic Maneuvers | 01/25/1965 |
| SL 68 |
|
en |
Installation of 1-9963 Acrobatic Placard | 12/09/1964 |
| SL 69 |
|
en |
Cracks Appearing in Gear Drag Strut Fitting | 02/04/1965 |
| SL 70 |
|
en |
Rudder Cable Pulley Lubrication | 02/08/1967 |
| SL 71 |
|
en |
Inspection Check of Fuel Vent Assembly | 01/15/1966 |
| SL 72 |
|
en |
Front Wing Strut Drain Hole | 02/08/1967 |
| SL 73 |
|
en |
Installation of Rudder Pedal Stop | 01/13/1967 |
| SL 74 |
|
en |
Color of Emergency Door Release | 02/08/1967 |
| SL 75 |
|
en |
Inspection of Wing Fabric and Leading Edge Skin Attachment | 02/08/1967 |
| SL 77 |
|
en |
Battery Acid Leakage During Acrobatics | 05/22/1967 |
| SL 78 |
|
en |
Replacement of Nylon Brake Lines | 05/22/1967 |
| SL 79 |
|
en |
Operation on Seat Belts, and Required Replacement Types | 02/12/1968 |
| SL 80 |
|
en |
Throttle Knob Attachment | 11/15/1967 |
| SL 81 |
|
en |
Brake Fluid Leakage in Aerobatic Aircraft | 11/15/1967 |
| SL 84 |
|
en |
Availability of Revised Wheel Pant Brackets | 01/15/1968 |
| SL 85 |
|
en |
Fabric Replacement - Pop-Riveted Wings | 02/05/1968 |
| SL 86 |
|
en |
Front Rudder Pedal Return Springs Rubbing on Adjacent Fuselage Tubes | 01/15/1968 |
| SL 87 |
|
en |
Service Publications Index | 01/04/1971 |
| SL 88 |
|
en |
Service Kit Index | 01/04/1971 |
| SL 89 |
|
en |
Revised 19.5-Gallon Fuel Tanks | 02/01/1968 |
| SL 91 |
|
en |
Availability of Auxiliary Upper Door Latch | 08/16/1968 |
| SL 92 |
|
en |
Vented, Sealed Manifold for Rebat Batteries Installed Aft of Baggage Compartment | 08/19/1968 |
| SL 93 |
|
en |
Propeller and Spinner Assembly Component | 02/13/1969 |
| SL 94 |
|
en |
Throttle Arm Knob Replacement | 05/05/1969 |
| SL 95 |
|
en |
Inspection, Repair and Modification of Aileron Bay Ribs | 06/09/1969 |
| SL 96 |
|
en |
Reinforcement of Fuselage Longeron at Landing Gear | 08/01/1969 |
| SL 97 |
|
en |
Inspection of Wing Fuel Selector Valve Alignment | 11/02/1970 |
| SL 98 |
|
en |
To Prevent Possible Loosening of Fuselage Belly Fabric at the Forward Belly Former | 11/02/1970 |
| SL 100 |
|
en |
Removal of P/N 2-1525 Rudder Pedal Springs | 05/05/1971 |
| SL 101 |
|
en |
Replacement of Aluminum Pulleys in Elevator and Rudder Control Systems | 09/10/1971 |
| SL 102 |
|
en |
Fuel Vent Line Blockage by Ice or Snow | 09/01/1972 |
| SL 103 |
|
en |
Battery Venting | 06/01/1972 |
| SL 104 |
|
en |
Control Cables Replacement | 09/12/1972 |
| SL 105 |
|
en |
Installation - Battery Box | 09/19/1972 |
| SL 106 |
|
en |
Fuel Lines 8KCAB 'Decathlon' | 09/25/1972 |
| SL 107 |
|
en |
Firewall and Cowling Cooling Modification | 09/25/1972 |
| SL 108 |
|
en |
Installation Flexible Brake Lines | 09/22/1972 |
| SL 109 |
|
en |
All 1972 and 1973 Champion 7ECA, 7GCAA, 7KCAB, 7GCBC and 8KCAB Manufactured Prior to May 1, 1973, Equipped with Folding Back Seat Frame | 05/05/1973 |
| SL 110 |
|
en |
Above Normal Vibration on 1973 Citabrias, 7EAC, 7GCAA, 7KCAB, 7GCBC Equipped with Two Piece Cowl Having an Oil Access Door Only | 05/30/1973 |
| SL 111 |
|
en |
Inspection of Left Wing Overboard Fuel Vent Assembly P/N 2-1938D | 07/27/1973 |
| SL 112 |
|
en |
Operation of Franklin Engine, 2A-120 | 02/12/1974 |
| SL 113 |
|
en |
Inspection and Repair of Wing Ribs | 11/05/1974 |
| SL 115 |
|
en |
Revised Propeller Limitations | 01/13/1975 |
| SL 116 |
|
en |
Wing Leading Edge Inspection | 03/06/1975 |
| SL 117 |
|
en |
Installation Butt Rib Support | 03/06/1975 |
| SL 118 |
A |
en |
Replacement of Carburetor Air Box Alternate Air Valve | 07/10/1975 |
| SL 119 |
A |
en |
Aileron Clearance | 07/05/1978 |
| SL 120 |
|
en |
Carburetor Airbox Alternate Air Valve Replacement | 05/01/1975 |
| SL 121 |
|
en |
Sorensen Equipment Approval | 05/20/1975 |
| SL 122 |
|
en |
Alternate Emergency Exit Placard | 01/05/1976 |
| SL 123 |
|
en |
Ammeter Needle Fluctuation | 12/19/1975 |
| SL 401 |
|
en |
Front Folding Seat | 06/14/1989 |
| SL 402 |
|
en |
Strut Fitting, Front Spar | 06/29/1990 |
| SL 403 |
|
en |
Oil Pressure Lines and Fuel Pressure Lines | 02/20/1992 |
| SL 404 |
|
en |
Aileron Hinges | 07/16/1992 |
| SL 405 |
|
en |
Strut Fitting, Front Spar | |
| SL 406 |
|
en |
Wood Spar Inspection | 03/28/1994 |
| SL 406 |
A |
en |
Wood Spar Inspection | 05/06/1998 |
| SL 407 |
|
en |
Cowling, Exhaust Stack Clearance, Tail Pipe Cracking Inspection | |
| SL 408 |
|
en |
Mandatory Inspection of Front Strut Fittings | 01/24/1996 |
| SL 409 |
A |
en |
Mandatory Inspection of Front Strut Fittings | 04/22/1996 |
| SL 410 |
|
en |
Mandatory Installation of Removable Inspection Hole Covers for Strut Fitting Removal and Repeat Inspection (Already Complied with Service Letter 408) | 05/06/1996 |
| SL 411 |
|
en |
Mandatory Installation of Removable Inspection Hole Covers for Strut Fitting Removal and Repeat Inspection | 05/06/1996 |
| SL 412 |
|
en |
Mandatory Installation of Removable Inspection Hole Covers for Strut Fitting Removal and Repeat Inspection (Already Complied with Service Letter 409) | 05/06/1996 |
| SL 413 |
|
en |
Mandatory Installation of Removable Inspection Hole Covers for Strut Fitting Removal and Repeat Inspection | 05/06/1996 |
| SL 414 |
A |
en |
Mandatory Repeat Inspection of Front Strut Fittings 3-1691 (Replacement of 3-1632 Fittings with 3-1691 Fittings) | 06/25/1996 |
| SL 415 |
A |
en |
Mandatory Repeat Inspection of Front Strut Fittings 3-1692 (Replacement of 3-1646 Fittings with 3-1692 Fittings) | 06/25/1996 |
| SL 416 |
|
en |
Inspection of Engine Cowling | 09/17/1996 |
| SL 417 |
|
en |
Installation of Inspection Covers for Wood Spar Inspection | 08/14/1997 |
| SL 417 |
A |
en |
Installation of Inspection Covers for Wood Spar Inspection | 10/02/1997 |
| SL 417 |
B |
en |
Installation of Inspection Covers for Wood Spar Inspection | 02/10/1998 |
| SL 417 |
C |
en |
Installation of Inspection Covers for Wood Spar Inspection | 05/06/1998 |
| SL 418 |
A |
en |
Electrical System Related Problems Including Grounded Wires Causing Fires and Grounded Wires Melting | 01/19/2001 |
| SL 419 |
|
en |
Inspection of Fuel Line Near Flap Quadrant | 02/05/1999 |
| SL 420 |
A |
en |
Metal Spar Wing Installation on Older Models | 04/25/2002 |
| SL 421 |
|
en |
Seat Belt Retrofit on Early Model Aircraft | 03/28/2002 |
| SL 422 |
A |
en |
Aluminum Gear Retrofit | 01/14/2005 |
| SL 423 |
|
en |
Optional 8KCAB Normal Category Gross Weight Increase | 03/08/2004 |
| SL 424 |
|
en |
Inspection of Flap Wing Root Pulley and Cable | 03/08/2004 |
| SL 425 |
|
en |
Inspection of Brake Cotter Pin | 06/17/2004 |
| SL 426 |
|
en |
Inspection/Upgrade of Wing Tip Navigational Light Wires | 01/19/2005 |
| SL 427 |
B |
en |
Inspection of Nicopress Sleeves | 11/29/2005 |
| SL 428 |
|
en |
Inspection of Repaired Wide Rear Seat | 01/27/2006 |
| SL 429 |
|
en |
Inspection of Stereo Headphone Wiring | 05/09/2007 |
| SL 430 |
A |
en |
Conversion of 7ECA, 7GCAA and 7GCBC to Lycoming O-320-B2B or Equivalently Provisioned Engine per TCDS E-274 | 03/05/2008 |
| SL 431 |
|
en |
Inspection Folding Rear Seat Hinge | 07/20/2009 |
| SL 432 |
|
en |
Mandatory Inspection Folding Rear Seat Restraint Cable | 03/17/2009 |
| SL 433 |
|
en |
Installation of Front Seat Lap Belts | 07/12/2010 |
| SL 434 |
|
en |
Door Release Pin and Ring | 06/09/2011 |
| SL 435 |
|
en |
Fuselage Inspection for Loose Items | 06/09/2011 |
| SL 436 |
|
en |
Installation Floorboard Extensions or Revised Floorboards | 06/10/2011 |
| SL 437 |
|
en |
One-Time Inspection of Folding Front Seat Bottom | 08/14/2012 |
| SL 438 |
|
en |
Inspection of Fuselage Frame at Main Gear Attachment | 09/25/2014 |
| SL 439 |
|
en |
Airbox Inspection | 01/22/2016 |
| SL 440 |
|
en |
Airbox Inspection | 01/22/2016 |
| SL 441 |
|
en |
Sealed Battery Installation; Also, Global Alternative Method of Compliance (AMOC) to AD 72-18-03 | 04/15/2015 |
| SL 442 |
|
en |
Inspection of Aileron Hinge Rib and Support | 02/16/2017 |
| SL 442 |
A |
en |
Inspection of Aileron Hinge Rib and Support | 08/18/2017 |
| SL 443 |
|
en |
Inspection of Aileron Hinge Rib and Support | 08/18/2017 |
| SL 444 |
|
en |
Installation of Aileron Hinge Reinforcement ((ICA)) | 08/18/2017 |
| SL 445 |
|
en |
Aerobatic Maneuvering and Aileron Application | 09/12/2017 |
| SL 446 |
|
en |
Elevator Control Cables | 05/23/2018 |
| SL 448 |
|
en |
8KCAB Loading Schedule | 05/21/2018 |
| SL 449 |
|
en |
Corrosion Inspection and Preventative Maintenance | 05/23/2018 |
| SL 450 |
|
en |
Exterior Washing | 06/02/2018 |
| SL 451 |
|
en |
Bolt Wear at Exhaust Slip Joints | 03/18/2020 |
| SL 452 |
|
en |
Relocation of Cowl Fastener | 03/19/2020 |
| SL 453 |
|
en |
Shroud to Nosebowl Clearance | 03/20/2020 |
| SL 454 |
|
en |
Improved Cabin Heat | 03/23/2020 |
| SL 455 |
|
en |
Air Box Screw/Bolt Abrasion | 08/08/2022 |
| SL 456 |
|
en |
Fuel Shut-Off Valve Assembly | 12/05/2022 |
| SL 457 |
|
en |
Lycoming Electronic Ignition System Placard | 02/10/2022 |
| SL 458 |
|
en |
Manifold Pressure Line Upgrade | 08/17/2023 |
