AD 71-17-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Brantly International, Inc. | B-2 | Airworthiness Directives; BRANTLY ROTORCRAFT Models B-2, B-2A, and B-2B Rotorcraft |
| aircraft | Brantly International, Inc. | B-2A | Airworthiness Directives; BRANTLY ROTORCRAFT Models B-2, B-2A, and B-2B Rotorcraft |
| aircraft | Brantly International, Inc. | B-2B | Airworthiness Directives; BRANTLY ROTORCRAFT Models B-2, B-2A, and B-2B Rotorcraft |
Unsafe Condition
Corrosion on the inner bore surface of the main rotor mast P/N 104-1 could impair structural integrity.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove mast plug P/N 151-18, visually inspect the inner bore surface for rust or corrosion, apply Mil-C-6925C preservative oil if clean, reinstall plug with new components, and safety wire the bolt. Repetitive inspections every 50 hours time in service are required.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 10 hours time in service after the effective date of this airworthiness directive and every 50 hours time in service thereafter
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BRANTLY ROTORCRAFT Models B-2, B-2A, and B-2B rotorcraft certified in all categories
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.