AD 2014-17-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Canada Corp | Airworthiness Directives; Pratt & Whitney Canada Corp. Turboprop Engines |
Unsafe Condition
Compressor turbine (CT) blade failure due to creep and/or sulfidation, leading to power loss and engine failure.
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Required Actions
Initial and repetitive borescope inspection (BSI) of CT blades. Remove from service blades that fail inspection. Install P&WC single crystal CT blades, part numbers 3072791-01 and 3072791-02, as a mandatory terminating action.
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Compliance Time
Within 36 months of the effective date.
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Affected Aircraft
Pratt & Whitney Canada Corp. PT6A-114 and PT6A-114A turboprop engines.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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