AD 2019-13-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky | Aircraft Corporation | Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters |
Unsafe Condition
A crack in a main transmission airframe support structure, which could result in failure of a main transmission frame 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
Inspect the main transmission forward and aft frame assemblies and adjacent skins for a crack and loose fasteners, and repairing or replacing any cracked part or loose fastener. Establish life limits for certain frame assemblies.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Sikorsky Model S-92A helicopters, with certain frame assembly part numbers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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