AD 2006-15-19
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky | Aircraft Corporation Model S-92A | Airworthiness Directives; Sikorsky Aircraft Corporation Model S-92A Helicopters |
Unsafe Condition
Premature fatigue failure of the main gearbox (MGB) upper main housing assembly due to a manufacturing process creating an oxide skin defect.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace each MGB housing assembly with 2700 or more hours time-in-service (TIS) with an airworthy part. Revise the Airworthiness Limitations section (ALS) of the maintenance manual to establish a new retirement life for the MGB housing assembly of 2700 hours TIS.
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Compliance Time
Before further flight
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Affected Aircraft
Sikorsky Aircraft Corporation Model S-92A helicopters with main gearbox (MGB) upper main housing assembly, part number 92351-15110-042, 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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