AD 2020-22-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Allison Engine Company | Various | Airworthiness Directives; Rolls-Royce Corporation (Type Certificate Previously Held by Allison Engine Company) Turboprop Engines |
Unsafe Condition
A fatigue crack that initiated in the propeller shaft and carrier assembly due to high vibration during a propeller gearbox development test.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Assign usage hours to the propeller shaft and carrier assembly at the next engine shop visit and replace the propeller shaft and carrier assemblies prior to exceeding the new life limits established by the manufacturer.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours
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Affected Aircraft
All Rolls-Royce Corporation (Type Certificate previously held by Allison Engine Company) AE 2100A, AE 2100D2, AE 2100D2A, and AE 2100P model turboprop engines.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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