AD 70-11-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Scotts-Bell 47 Inc | 47B | Airworthiness Directives; Bell Model 47B, 47B-3, 47D, 47D-1, 47G, 47G-2 and 47H-1 Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47B3 | Airworthiness Directives; Bell Model 47B, 47B-3, 47D, 47D-1, 47G, 47G-2 and 47H-1 Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47D | Airworthiness Directives; Bell Model 47B, 47B-3, 47D, 47D-1, 47G, 47G-2 and 47H-1 Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47D1 | Airworthiness Directives; Bell Model 47B, 47B-3, 47D, 47D-1, 47G, 47G-2 and 47H-1 Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G | Airworthiness Directives; Bell Model 47B, 47B-3, 47D, 47D-1, 47G, 47G-2 and 47H-1 Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47G-2 | Airworthiness Directives; Bell Model 47B, 47B-3, 47D, 47D-1, 47G, 47G-2 and 47H-1 Helicopters |
| aircraft | Scotts-Bell 47 Inc | 47H-1 | Airworthiness Directives; Bell Model 47B, 47B-3, 47D, 47D-1, 47G, 47G-2 and 47H-1 Helicopters |
Unsafe Condition
Failure of the drag link equalizer horn due to improper casting material.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Accomplish a one-time inspection for hardness as specified in Bell Helicopter Company Service Bulletin No. 144 SB dated October 9, 1969. Remove and replace horns with hardness values below those specified in Part II of the same service bulletin before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 50 hours' time in service after the effective date of this AD
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Affected Aircraft
Bell Model 47B, 47B-3, 47D, 47D-1, 47G, 47G-2, and 47H-1 helicopters equipped with wood main rotor blades and drag link equalizer horn P/N 47-120-167-1.
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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