- Model
- RC-3
- Data sheet
- TCDSA-769
- Registered aircraft
- 126 matched by model
- Product
- Aircraft · Small airplane
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 19 KB | 53fb58e1…4439197 | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-21-22 REPUBLIC: (Was Service Note 2 of AD-769-2.) Applies to Model RC-3 Aircraft.
Inspection required before next flight and at each subsequent 25 hours of operation.
If no tab type lockwashers are installed, check tightness of engine mounting bolts to torque of 25 foot-pounds on 3/8-inch bolts and 30 foot-pounds on 7/16-inch bolts. If it is found that loosening has occurred it will be necessary to install tab type lockwashers under all engine mounting bolts. (AMI P/N 15175 for 3/8-inch bolts, AMI P/N 15176 for 7/16-inch bolts.)
If tab type lockwashers have been installed previously and tabs are in place, inspection is required only at the regular 100-hour periods.
(Aircooled Motors Service Bulletin No. 47 pertains to this subject.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 126
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1946 | 19 |
|---|---|
| 1947 | 73 |
| 1962 | 1 |
33 with no year recorded