AD 68-13-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper Models PA-31 and PA-31-300 Type Aircraft |
| aircraft | Piper Aircraft Inc. | PA-31-300 | Airworthiness Directives; Piper Models PA-31 and PA-31-300 Type Aircraft |
Unsafe Condition
Electrical wire arcing to the fuel crossfeed line behind the fuel control panel in the cockpit due to chafing or interference of wiring with the fuel crossfeed line, spar structure, and cover assembly P/N 41448-00, which could lead to in-flight fire.
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Required Actions
Inspect wiring for chafing or interference at the fuel crossfeed line, spar structure, and fuel control cable. Replace chafed wires and fuel crossfeed line worn over 10% wall thickness. Reroute wiring and secure fuel crossfeed line per Piper Service Bulletin 278 or FAA-approved equivalent.
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Compliance Time
within the next 5 hours time in service after the effective date of this airworthiness directive
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Affected Aircraft
Piper Models PA-31 and PA-31-300 type aircraft with serial numbers 31-2 through 31-220 inclusive, 31-222, 31-223, 31-225, 31-228, 31-234, 31-237, 31-238, 31-240, 31-242, and 31-243.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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