AD 77-01-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-23-250 | Airworthiness Directives; Piper Model PA-23-250 Aircraft |
| aircraft | Piper Aircraft Inc. | PA-23-250 (Navy UO-1) | Airworthiness Directives; Piper Model PA-23-250 Aircraft |
Unsafe Condition
Chaffing of the wing tip mounted strobe NAV light wire and possible electrical arcing to the adjacent wing tip rib.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Apply additional insulating material to the applicable electric wiring in accordance with Service Bulletin No. 486 dated October 11, 1976, or an approved alternate method. Compliance time may be increased upon request with substantiating data through an FAA maintenance inspector, subject to approval by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.
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Compliance Time
within the next 50 hours' time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
Piper Aircraft Inc. Model PA-23-250 (6 place) Aztec S/Ns 27-7654001 to 27-7654049 inclusive, 27-7654051 to 27-7654099 inclusive, 27-7654101 to 27-7654116 inclusive, 27-7654118 to 27-7654131 inclusive, 27-7654133 to 27-7654146 inclusive, 27-7654148 to 27-7654160 inclusive, 27-7654162 to 27-7654164 inclusive, and 27-7654166 to 27-7654171 inclusive.
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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