AD 79-26-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-23-250 | Airworthiness Directives; Piper Model PA-23-250 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-23-250 (Navy UO-1) | Airworthiness Directives; Piper Model PA-23-250 Airplanes |
Unsafe Condition
Possible loosening and relative motion between the stabilator bottom skins and the stabilator frame - structure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and repair or alter the left and right stabilator in accordance with Piper Service Bulletin No. 606 dated July 12, 1979, or approved equivalent. If altered per paragraph B.4 of the instructions, compliance is no longer required. Equivalent actions must be 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 50 hours in service after the effective date of this AD, unless already accomplished within the past 50 hours and at intervals not to exceed 100 hours in service thereafter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Model PA-23-250 airplanes, serial numbers 27-7654001 thru 27-7954044 with stabilators having serial numbers 0336-L thru 0607-L and 0337-R thru 0609-R.
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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