AD 2005-12-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky | Aircraft Corporation Model S-92A | Airworthiness Directives; Sikorsky Aircraft Corporation Model S-92A Helicopters |
Unsafe Condition
Failure of the vespel spline adapter installed on the helicopter due to excessive wear, leading to loss of oil pressure and potential loss of lubrication to the main gearbox (MGB).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove and replace each MGB lubrication/scavenge pump vespel spline adapter before further flight, and thereafter, replace them at intervals not to exceed 50 hours time-in-service (TIS).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight, unless accomplished previously, and thereafter, at intervals not to exceed 50 hours TIS.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Sikorsky Aircraft Corporation Model S-92A helicopters with main gearbox (MGB) lubrication/scavenge pump, part number (P/N) 92351-15800-101, with vespel spline adapter, P/N 1584000-1, installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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