AD 79-20-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-325 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-350 | Airworthiness Directives; Piper Models PA-31, PA-31-325, and PA-31-350 Airplanes |
Unsafe Condition
Smoke in the cockpit due to overheating of voltage dropping resistors powering three 12 volt cigar lighters through a triplet of resistors.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Disconnect specific wires (CIG-1 or CIG-1A) from designated circuit breakers, insulate the disconnected wire ends, and secure them against the wire bundle. Equivalent methods approved by FAA may be used.
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Compliance Time
within the next 25 hours time in service or 30 days, whichever occurs first, after the effective date of this AD unless already accomplished
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Affected Aircraft
Piper Models PA-31, PA-31-325 (S/N 31-7712074 through 31-7912098), and PA-31-350 (S/N 31-7752096 through 31-7952197 except 31-7952191, 31-7952193, 31-7952195)
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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