AD 2013-03-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Canada Corp | Airworthiness Directives; Pratt & Whitney Canada Corp Turboshaft Engines |
Unsafe Condition
Failure of the retaining ring that holds the power turbine (PT) baffle in its intended position, leading to PT baffle displacement and contact with the downstream side of the second stage PT disk, resulting in PT disk damage.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Borescope-inspect to verify the presence of a retaining ring securing the PT baffle located near the second stage PT disk. If the retaining ring is missing or the PT baffle is out of position, remove the engine from service before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within specified operating hours or PT cycles, depending on the engine's PT cycle count on the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney Canada Corp. PT6C-67C turboshaft engines that have not had P&WC Service Bulletin No. PT6C-72-41056 incorporated.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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