AD 47-32-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47B | Airworthiness Directives; Bell Model 47B Airplanes |
Unsafe Condition
Failure of the 14ST pillow blocks 47-120-111-1 on the main rotor hub due to extreme misapplication of flight controls, which could lead to structural failure and loss of aircraft control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the 14ST pillow blocks with 4340 steel pillow blocks 47-120-111-5 and inspect the hub assembly per Bell Service Bulletin 47C45 (Revised). Update the Flight Manual 47B Series, Section II, paragraph 14B as referenced.
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Compliance Time
before next flight
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Affected Aircraft
Scotts-Bell 47 Inc Model 47B serial numbers 5, 8, 9, 10, 11, 12, 15, 16, 20, 21, 22, 24, 25, 26, 27, 30, 31, 35, 36, 37, 39, 41, 42, 43, 45, 51, and 52.
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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