AD 47-21-22
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sky Enterprises, Inc. | RC-3 | Airworthiness Directives; Republic Model RC-3 Aircraft |
Unsafe Condition
Loosening of engine mounting bolts due to absence or improper installation of tab type lockwashers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect engine mounting bolts before next flight and at each subsequent 25 hours of operation. Check torque to 25 foot-pounds for 3/8-inch bolts and 30 foot-pounds for 7/16-inch bolts. Install tab type lockwashers (AMI P/N 15175 and 15176) if loosening occurs or if not already installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before next flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Republic Model RC-3 Aircraft as specified in Service Note 2 of AD-769-2
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.