AD Amdt-39-9936
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Canada PT6 Series | Airworthiness Directives; Pratt & Whitney Canada PT6 Series Turboprop Engines |
Unsafe Condition
Malfunctions of compressor bleed-off valves (BOVs) may result in inflight engine power reduction.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a one-time visual inspection of compressor BOVs to check for affected supplier's code number. Remove bleed valve cover assembly and inspect cotter pin and guide shaft pin if code is present. Modify or replace compressor BOV if pins are not acceptable.
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 PT6 series turboprop engines with certain compressor bleed-off valves (BOVs) having an affected supplier's code number on the cover.
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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