AD 47-41-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47B | Airworthiness Directives; Bell Model 47B and 47B3 Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47B3 | Airworthiness Directives; Bell Model 47B and 47B3 Helicopters |
Unsafe Condition
Excessive vibration and subsequent failure of the main oil line from the oil cooler to the oil filter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install two additional supports for the main oil line, one each at the bends near the oil filter and oil cooler.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to next flight after receipt of parts from Bell Aircraft Corp., but not later than January 1, 1948.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Scotts-Bell 47 Inc Models 47B and 47B3 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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