R22 Service Letters
Number | Subject | Date |
---|---|---|
R22 SL-97 | Cockpit Camera Firmware (Software) Update | 23 JUNE 2023 |
R22 SL-96 | Tail Rotor Static Balance Equivalent Tool | 16 MAR 2023 |
R22 SL-95 | Lycoming Carbureted Engine Intake Valve Rotator Caps | 12 OCT 2022 |
R22 SL-94 | Engine RPM Sensor Preventive Maintenance | 22 JUL 2022 |
R22 SL-93A Supersedes R22 SL-93 | Tail Rotor Blade Condition and Care | 03 JUN 2022 |
R22 SL-92 | ELT Security | 30 JUN 2021 |
R22 SL-91 | A462-4 Fitting Attachments | 30 JUN 2021 |
R22 SL-90 | A017-2 Revision AN Swashplate Assembly Shimming Procedure and Parts | 30 JUN 2021 |
R22 SL-89B Supersedes R22 SL-89A | RHC Instructions for Continued Airworthiness (ICA) Digital Updates | 24 MAR 2023 |
R22 SL-88B Supersedes R22 SL-88A | A792-5 Dual Tachometer | 07 JUL 2021 |
R22 SL-87 | Main and Tail Gearbox Oil | 21 AUG 2020 |
R22 SL-86 | Inspection After Stabilizer Damage | 11 MAR 2020 |
R22 SL-85 | Kannad ELT Service Bulletin | 11 MAR 2020 |
R22 SL-84 | A258-5 Pitch Link Assembly | 02 DEC 2019 |
R22 SL-83 | Main Rotor Blade Tip Maintenance | 29 JUL 2019 |
R22 SL-82B Superseded by R22 SB-116 | Main Rotor Blade Tip Plate Permanent Removal | 29 JUL 2019 |
R22 SL-81C Supersedes R22 SL-81B | Component Maintenance Course | 04 DEC 2023 |
R22 SL-80 Supersedes R22 SL-46 | Gearbox Chip Detector Maintenance | 08 JUN 2018 |
R22 SL-79 | Unauthorized Repairs on Main Rotor Blades in Brazil | 08 JUN 2018 |
R22 SL-78 | A190-2 Drive Belts | 20 DEC 2017 |
R22 SL-77A Supersedes R22 SL-77 | Fire Extinguisher Handling and Maintenance | 20 DEC 2017 |
R22 SL-76A Supersedes R22 SL-76 | Lycoming Engine Connecting Rod Small-end Bushings | 27 JUL 2017 |
R22 SL-75 Supersedes R22 SL-51 | Governor Troubleshooting/Magneto Maintenance | 21 JUL 2017 |
R22 SL-74B Supersedes R22 SL-74A | Riveted A185 Brackets Installation & Fiberglass Scroll Repair | 16 MAR 2023 |
R22 SL-73 | High CHT Indication | 06 JUN 2017 |
R22 SL-72 | New A020-90 & A047-6 Upper Frame Installation | 21 NOV 2016 |
R22 SL-71A Supersedes R22 SL-71A | Avionics Software | 20 DEC 2017 |
R22 SL-70 | Main Rotor Blade Tip Fasteners | 07 NOV 2016 |
R22 SL-69 | Altimeters | 04 APR 2016 |
R22 SL-68 | A158-3 Spindles | 04 APR 2016 |
R22 SL-67 | Collective-Activated Hourmeter | 04 APR 2016 |
R22 SL-66 | Full Throttle Caution Light Kit | 08 DEC 2014 |
R22 SL-65A Supersedes R22 SL-65 | B526 TORX Plus Truss Head Screws | 13 OCT 2014 |
R22 SL-64 | D210 Corrosion-Resistant CRES Nuts | 13 OCT 2014 |
R22 SL-63 | A016-6 Main Rotor Blades | 10 SEP 2014 |
R22 SL-62 | Cleanable Air Filters | 03 JUL 2013 |
R22 SL-61 | Deleted Safety Wire | 03 JUL 2013 |
R22 SL-60 | Kannad ELT Service Bulletin Ref. Kannad ELT Service Bulletin S1820514-25-04 | 19 JUL 2012 |
R22 SL-59 | MRGB Oil Level Fluctuation | 07 SEP 2011 |
R22 SL-58 | Cracked MS21042L-series Nuts | 18 AUG 2011 |
R22 SL-57 | Alternator V-Belts | 22 FEB 2008 |
R22 SL-56B | A016-4, C016-2, and C016-5 Main Rotor Blade Bond Maintenance Additional Information Regarding Main Rotor Blade Skin Debonding | 30 APR 2010 |
R22 SL-55 | Main Rotor Blade Inspection | 01 JUN 2006 |
R22 SL-54 Ref. AD 2004-06-52 | Revised Main Rotor Blade Retirement Life | 17 JUN 2004 |
R22 SL-53 | Visual Inspection of Main Rotor Blade Root Area | 21 NOV 2001 |
R22 SL-52 Supersedes SL-49 | Master Battery Relay Upgrade | 01 AUG 2001 |
R22 SL-51 Superseded by R22 SL-75 | Tachometer Contact Assembly in Magneto | 14 APR 1999 |
R22 SL-50 | Mixture Control Cable Clamp | 02 OCT 1998 |
R22 SL-49 Superseded by R22 SL-52 | Master Battery Relay | 08 SEP 1998 |
R22 SL-48 | A184 Upper Clutch Actuator Bearing | 04 MAR 1997 |
R22 SL-47 | "GOV OFF" (Governor Off) Caution Light | 10 APR 1996 |
R22 SL-46 Superseded by R22 SL-80 | Main Rotor and Tail Rotor Gearbox Chip Detectors | 23 SEP 1994 |
R22 SL-45 Ref. AD 94-17-07 and Ref. R22 SB-74 | Tail Rotor Gearbox Shaft Keys - Terminating Action for AD 94-17-07 | 23 SEP 1994 |
R22 SL-44 Superseded by R22 SB-105 | Replacement of Fuel Shut-Off Guard | 20 OCT 1992 |
R22 SL-43 | Additional Caution Decal for Baggage Compartments | 08 OCT 1992 |
R22 SL-42 | Replacement of Inlet Ducts | 18 JUN 1992 |
R22 SL-41 | False Low RPM Warning Occurring During Radio Transmissions | 13 MAR 1992 |
R22 SL-40 | Tail Rotor Visual Warning Guard and Danger Decals | 28 AUG 1991 |
R22 SL-39 Supersedes R22 SL-27 | Installation of New A190-2 Vee Belts | 19 APR 1991 |
R22 SL-38 | Black and White Paint Scheme for Tail Rotor Blades | 22 MAR 1991 |
R22 SL-37 | Precision Airmotive Service Bulletins MSA-1 and MSA-2 | NOV 1990 |
R22 SL-36 | Alignment of Fan Shaft Bearing Housing | 05 OCT 1990 |
R22 SL-35 | Alignment of Vee Belt Sheaves | 06 JUN 1990 |
R22 SL-34 | Excessive Oil Leakage from Tail Rotor Gearbox Breather Tube | 15 SEP 1989 |
R22 SL-33 | Aeroquip Corporation Bulletin No. 001 | 18 MAY 1989 |
R22 SL-32 | Overruning Sprag Clutch Bearings | 07 NOV 1988 |
R22 SL-31 | A184-1 Clutch Bearing | 12 APR 1988 |
R22 SL-30 | Magneto Switch Wiring | 16 NOV 1987 |
R22 SL-29 | Proper Use of Starter Switch to Avoid Breaking Starter | 14 SEP 1987 |
R22 SL-28 | Avco Lycoming Service Bulletin No. 477 | 17 DEC 1986 |
R22 SL-27 Superseded by R22 SL-39 | New A190-2 Banded Vee Belt Installation | 01 OCT 1986 |
R22 SL-26 | Battery Terminal Misalignment | 15 APR 1986 |
R22 SL-25 | Modification of A437 Jackshaft Brace Tab | 15 JAN 1985 |
R22 SL-24 | Removal of Clutch Yokes Before Shipment | 06 NOV 1984 |
R22 SL-23A | Special Caution When Installing Vee Belts or Other Driveline Components | 20 JUN 1984 |
R22 SL-22 | Replacement Bearings for Tail Rotor Teeter Hinge, and, Severe Hazard When Using Any Non-Approved Bearings | 17 FEB 1984 |
R22 SL-21A | Main Rotor Blade Sealant and Filler Cracking | 31 MAY 2002 |
R22 SL-20A | Vee Belt Installation | 20 JUN 1984 |
R22 SL-19 | Installation of Guard for Removable Cyclic Stick | 18 OCT 1982 |
R22 SL-18 | Installation of Mixture Control | 07 JUN 1982 |
R22 SL-17 | Removal of Cabin Heater Muffler Shroud in Warm Weather to Extend Muffler Service Life | 17 MAY 1982 |
R22 SL-16 | Installation of the A911-1 Cabin Heater Scoop | 19 MAY 1982 |
R22 SL-15 | Visual Inspection of Main Rotor Blade Root Area | 23 SEP 1981 |
R22 SL-14 | Inspection of A197 Tail Rotor Drive Shafts | 16 SEP 1981 |
R22 SL-13 | Loose Horizontal Firewall to Steel Tube Frame Attach Bolts | 10 SEP 1981 |
R22 SL-12 | Premature Wear of A190-1 Vee Belts | 19 AUG 1981 |
R22 SL-11 | Loose Upper Cylinder Base Nuts | 18 AUG 1981 |
R22 SL-10 | Engine Idle Speed Limitations | 11 AUG 1981 |
R22 SL-09 | Installation of A214-3 Safety Washers | 27 JUL 1981 |
R22 SL-08 | Action Required When MR Chip Light Comes On | 03 OCT 1980 |
R22 SL-07 | Inspection of Long Tail Rotor Drive Shaft | 27 SEP 1980 |
R22 SL-06 | Inspection of A193-2 Flex Plate | 24 SEP 1980 |
R22 SL-05 | Installation of Nickel Plated Washers in the Forward and Intermediate Flex Plates | 29 OCT 1980 |
R22 SL-04 | Battery Ground Strap | 22 JUL 1980 |
R22 SL-03 | Tail Rotor Control Pedals | 22 JUL 1980 |
R22 SL-02 | Tail Rotor Control Push-Pull Tube A121-13 | 22 JUL 1980 |
R22 SL-01 | Cabin Heat Blower Assembly A643 | 22 JUL 1980 |
R22 Service Letters to Selected Owners
Number | Subject | Date |
---|---|---|
N/A | Modification of S723-1 Oil Filter Adapter to Facilitate Oil Filter Removal | 11 JAN 2002 |
N/A | SB-10 dated 27 April 1981 and SB-44 dated 05 February 1985 CANCELLED | 12 SEP 2000 |
N/A | Elastomeric Tail Rotor Teeter Hinge Bearings | 12 MAY 1997 |
N/A | Carburetor Floats | 22 JUL 1992 |
N/A | Replacement of Low RPM Circuit | 03 JUN 1992 |
N/A | Installation of New Governor Toggle Switch | 22 OCT 1990 |
N/A | Latches on Carb Air Box Cover | 10 OCT 1988 |
N/A | Carburetor Air Inlet Duct | 15 JAN 1988 |
N/A | Float Gear Installation and Removal | 07 JUL 1987 |
N/A | Modification of MAP Limit Charts A654-64 Decal for Beta Model | 06 DEC 1986 |
N/A | Modification of A752-2 Headset | 22 MAY 1985 |