AD 80-26-04 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-23 | Airworthiness Directives; Piper Model PA-23, PA-23-160, PA-23-235 and PA-23-250 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-23-160 | Airworthiness Directives; Piper Model PA-23, PA-23-160, PA-23-235 and PA-23-250 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-23-235 | Airworthiness Directives; Piper Model PA-23, PA-23-160, PA-23-235 and PA-23-250 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-23-250 | Airworthiness Directives; Piper Model PA-23, PA-23-160, PA-23-235 and PA-23-250 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-23-250 (Navy UO-1) | Airworthiness Directives; Piper Model PA-23, PA-23-160, PA-23-235 and PA-23-250 Airplanes |
Unsafe Condition
Cracks and possible misalignment of the rudder cable-pulley at the fuselage crossmember which supports the cabin entrance step.
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Required Actions
Inspect the cabin entrance step supporting frame structure for cracks, repair as necessary, and incorporate additional bracketry for the footstep attachment at the rudder pulley unless already done. Follow Piper Service Bulletin No. 672 or equivalent.
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Compliance Time
Within the next 100 hours in service for airplanes with 500 or more hours on the effective date, or before 600 hours in service for those with less than 500 hours on the effective date.
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Affected Aircraft
Piper Model PA-23, PA-23-160 (Serial Nos. 23-1 thru 23-2046), PA-23-235 (Serial Nos. 27-505 thru 27-622), PA-23-250 (Serial Nos. 27-1 thru 27-504 and 27-2000 thru 27-8054049) certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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