AD 66-03-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Limited | Gipsy Queen 30 MK.2 | BRISTOL SIDDELEY Model Gipsy Queen Series 30 Engines |
Unsafe Condition
Failure of the crankshaft front end could result in loss of the propeller.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect crankshaft for cracks within 25 hours' time in service after the AD's effective date per Bristol Siddeley TNS GQ30 No. 70 or equivalent. Replace cracked crankshafts before further flight. Incorporate Modification 2925 within 1,600 hours' time in service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the specified time frames: inspection within 25 hours' time in service, replacement before further flight, and modification within 1,600 hours' time in service after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bristol Siddeley Model Gipsy Queen Series 30 Engines with Crankshafts with Modification 2036 or 2162 installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.