AD 48-19-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47B | Airworthiness Directives; Bell Model 47B, 47B3, and 47D Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47B3 | Airworthiness Directives; Bell Model 47B, 47B3, and 47D Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47D | Airworthiness Directives; Bell Model 47B, 47B3, and 47D Helicopters |
Unsafe Condition
Failure of the stabilizer bar damper replenishing valves due to insufficient oil submersion could result in loss of stabilizer bar damping function.
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Required Actions
Replace existing damper support frames (47-140-132-1) with redesigned frames (47-140-013) to ensure continuous oil submersion of the stabilizer bar damper replenishing valves.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
June 15, 1948
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Affected Aircraft
Scotts-Bell 47 Inc Model 47B, 47B3, and 47D helicopters, all serial numbers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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