AD 70-22-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-23-250 (Navy UO-1) | Airworthiness Directives; Piper PA 23-250, PA-30, PA-31 and PA-31-300 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-30 | Airworthiness Directives; Piper PA 23-250, PA-30, PA-31 and PA-31-300 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper PA 23-250, PA-30, PA-31 and PA-31-300 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-300 | Airworthiness Directives; Piper PA 23-250, PA-30, PA-31 and PA-31-300 Airplanes |
Unsafe Condition
The possibility of a complete loss of electrical power while operating under Instrument Flight Rules.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the aircraft electrical system in accordance with Piper Service Bulletin No. 306 dated January 9, 1970 or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 100 hours in service after the effective date of this AD, unless already accomplished
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Affected Aircraft
Piper PA 23-250 (Navy UO-1) S/N 27-3837 and 27-3944 to 27-4442 incl.; PA-30 S/Nos. 30-1717, 30-1746 to 30-2000 incl.; PA-31 and PA-31-300 S/Nos. 31-228, 31-230, 31-231, 31-233 to 31-588, certificated for Instrument Flight.
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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