AD 2010-24-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky | S-92A | Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Model S-92A Helicopters |
Unsafe Condition
Cracks and corrosion in the main gearbox (MGB) assembly mounting foot pad and rib, which could result in loss of the MGB and subsequent loss of control of the helicopter.
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Required Actions
Clean and inspect each MGB assembly mounting foot pad and rib for cracks and corrosion. Apply a corrosion preventive compound if no crack is found. Replace the MGB before further flight if a crack is found. Repair the MGB before further flight if corrosion, bubbled paint, or paint discoloration is found.
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Compliance Time
Before further flight
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Affected Aircraft
Sikorsky Aircraft Corporation Model S-92A helicopters with MGB assembly, part number 92351-15000-044, and MGB housing, part number 92351-15110-046.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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