AD 58-02-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47J | Airworthiness Directives; Bell Model 47J Helicopters |
Unsafe Condition
Faulty bond between the butt plate laminates and the wood portion of the main rotor blade (P/N 47-110-401-7, -9, -11) may cause separation with possible catastrophic results.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect butt plate laminates for bond separation by coning the blade and checking for separation after each refueling until 50 flight hours, then daily. Perform a one-time tap test inspection for bonding voids using a wrench, and notify Bell Helicopter Corporation if separation or voids are found.
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Compliance Time
Inspection required after each refueling until blades accumulate a total of 50 hours flight time and then daily thereafter. Tap test inspection must be performed on a one-time basis.
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Affected Aircraft
All Model 47J Helicopters using Main Rotor Blade P/N 47-110-401-7, -9, and -11.
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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