AD 2010-17-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Pratt & Whitney Canada Corp. PW617F-E Turbofan Engines |
| engine | Pratt & Whitney | Canada Corp | Airworthiness Directives; Pratt & Whitney Canada Corp. PW617F-E Turbofan Engines |
Unsafe Condition
The Fuel Filter Bypass Valve poppet in the Fuel Oil Heat Exchanger (FOHE) on a PW617F-E engine had worn through the housing seat, allowing unfiltered fuel and debris to contaminate the Fuel Metering Unit (FMU), resulting in fuel flow drop and subsequent power reduction.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the FOHE fuel filter bypass poppet valve with a larger fuel filter bypass poppet valve within 25 hours of the effective date of the AD. Use paragraph 3.A. of the Accomplishment Instructions of Pratt & Whitney Canada Corp. ASB No. PW600-72-A66021, Revision 1, dated January 7, 2010, for the replacement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 25 hours of 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. PW617F-E turbofan engines with fuel/oil heat exchanger (FOHE) part number (P/N) 35C4540-01 installed, including those installed on Empresa Brasileira de Aeronáutica S.A (EMB) 500 airplanes.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.