AD 2023-06-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Canada Corporation | Airworthiness Directives; Pratt & Whitney Canada Corporation Turbofan Engines |
Unsafe Condition
The combustion chamber outer case (CCOC) to rear compressor case (RCC) flange bolt low cycle fatigue life was inadequate and those flange bolts may develop cracks resulting in flange bolt fracture.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replacing all CCOC flange bolts and modifying the CCOC and inner bypass ducts. Prohibiting installation of certain flange bolts on any affected engine, as specified in a Transport Canada AD.
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
Pratt & Whitney Canada Corporation (P&WC) PW308A model turbofan engines with build specification (BS) BS935 and BS1249, serial numbers PCE-CE0180 and prior, and PW308C model turbofan engines with BS1047 and BS1238, serial numbers PCE-CF0967 and prior.
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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