AD 52-01-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47B | Airworthiness Directives; Bell Model 47B, and 47B3 and 47D Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47B3 | Airworthiness Directives; Bell Model 47B, and 47B3 and 47D Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47D | Airworthiness Directives; Bell Model 47B, and 47B3 and 47D Helicopters |
Unsafe Condition
Failure of main rotor blade equalizer horns and drag brace fittings, which can result in damage to the main rotor.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace existing equalizer horn (P/N 47-120-027-2) and drag brace fitting (P/N 47-110-145-2) with revised parts P/N 47-120-167-1 and P/N 47-110-235-1, respectively.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
next 300-hour overhaul, but not later than March 1, 1952
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bell Model 47B, 47B3, and 47D Helicopters (Serial Numbers 1 to 79, inclusive)
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
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