AD 81-23-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31P | Airworthiness Directives; Piper Model PA-31P, PA-31T and Model PA-31T1 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31T | Airworthiness Directives; Piper Model PA-31P, PA-31T and Model PA-31T1 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31T1 | Airworthiness Directives; Piper Model PA-31P, PA-31T and Model PA-31T1 Airplanes |
Unsafe Condition
Cracks in the outboard flap track, attachment angles, wing rib flange, and the rear spar web could cause possible hazards in flight.
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Required Actions
Inspect, repair, and alter the flap track structure in accordance with Piper Kit No. 763 986 or equivalent. Alternate inspections, repairs, or alterations approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may be used. Adjusted inspection intervals may be approved upon submission of substantiating data through an FAA Maintenance Inspector.
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Compliance Time
Within the next 50 hours in service from the effective date of this AD or upon the attainment of 1000 hours in service, whichever is later
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Affected Aircraft
Piper Model PA-31P (Serial Nos. 31P-1 thru 31P-7730012), PA-31T (Serial Nos. 31T-7400002 thru 31T-8020086), and PA-31T1 (Serial Nos. 31T-7804001 thru 31T-8104001) except aircraft incorporating Piper Kit No. 763 986.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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