AD 98-06-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Westland Helicopters Limited | Westland 30 Series 100 | Airworthiness Directives; GKN Westland Helicopters Ltd., 30 Series Helicopters |
| aircraft | Westland Helicopters Limited | Westland 30 Series 100-60 | Airworthiness Directives; GKN Westland Helicopters Ltd., 30 Series Helicopters |
Unsafe Condition
Failure of the tail rotor drive shaft coupling attachment flanges due to cracks, which could result in loss of power to the tail rotor and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Determine the total hours time-in-service (TIS) for each of the six tail rotor drive shafts, create a component history card or equivalent record for each shaft, and replace or inspect the drive shafts if they exceed specified TIS limits (1,000 hours for shafts 1-5, 500 hours for shaft 6). Inspections must be done per SB W30-65-48, paragraph 2.B.(3), prior to further flight and at intervals not exceeding 3 hours TIS.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within
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Affected Aircraft
Westland 30 Series Helicopters, certificated in any category.
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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