AD 2004-23-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus | Aircraft Ltd | Airworthiness Directives; Pilatus Aircraft Ltd. Model PC-7 Airplanes |
Unsafe Condition
Failure of the Lear Romec RR53710B or RR53710K fuel booster pump wire leads due to lack of spiral wrap protection.
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Required Actions
Inspect installed fuel booster pump wire leads for defects. If defects are found, replace the fuel booster pump with a modified version that includes spiral wrap. If no defects are found, install spiral wrap and add the suffix letter 'B' to the serial number on the identification plate.
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Compliance Time
Before further flight
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Affected Aircraft
Pilatus Aircraft Ltd. Model PC-7 airplanes with Lear Romec RR53710B or RR53710K fuel booster pumps (Pilatus part numbers 968.84.11.401, 968.84.11.403, or 968.84.11.404).
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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