AD 55-05-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47B | Airworthiness Directives; Bell Model 47B, 47B3, 47D, 47D1 and 47G Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47B3 | Airworthiness Directives; Bell Model 47B, 47B3, 47D, 47D1 and 47G Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47D | Airworthiness Directives; Bell Model 47B, 47B3, 47D, 47D1 and 47G Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47D1 | Airworthiness Directives; Bell Model 47B, 47B3, 47D, 47D1 and 47G Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G | Airworthiness Directives; Bell Model 47B, 47B3, 47D, 47D1 and 47G Helicopters |
Unsafe Condition
Seizing, binding, or brinelling of pitch control link bearings in the tail rotor pitch control links, P/N 47-641-032-1.
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Required Actions
Replace tail rotor pitch control links P/N 47-641-032-1 with newly designed control links P/N 47-641-070-1. Comply with Bell's Mandatory Service Bulletin No. 97, Revision A for inspection and installation details.
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Compliance Time
At the expiration of 50 flying hours total time, with 25 additional flying hours acceptable if the inspection in Bell's Mandatory Service Bulletin No. 97, Revision A is completed.
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Affected Aircraft
Bell Model 47B, 47B3, 47D, 47D1, and 47G helicopters.
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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