AD 85-08-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper Model PA-31/PA-31-300 and PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2 and PA-31T3 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-300 | Airworthiness Directives; Piper Model PA-31/PA-31-300 and PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2 and PA-31T3 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-325 | Airworthiness Directives; Piper Model PA-31/PA-31-300 and PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2 and PA-31T3 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-350 | Airworthiness Directives; Piper Model PA-31/PA-31-300 and PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2 and PA-31T3 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31P | Airworthiness Directives; Piper Model PA-31/PA-31-300 and PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2 and PA-31T3 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31T | Airworthiness Directives; Piper Model PA-31/PA-31-300 and PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2 and PA-31T3 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31T1 | Airworthiness Directives; Piper Model PA-31/PA-31-300 and PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2 and PA-31T3 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31T2 | Airworthiness Directives; Piper Model PA-31/PA-31-300 and PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2 and PA-31T3 Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31T3 | Airworthiness Directives; Piper Model PA-31/PA-31-300 and PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2 and PA-31T3 Airplanes |
Unsafe Condition
Abnormal wear or damage (gouges, scoring, ridges, non-concentric wear) on strut housing interior walls and deformed retaining pins could lead to loss of main and nose landing gear.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect strut housing interior walls for abnormal wear or damage and replace if found. Remove and replace retaining pins connecting upper bearing to piston tube, using oversize pins if holes are deformed or install new harder pins if acceptable. Reassemble with new seals and reinstall landing gear per manuals.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 100 hours time-in-service after the effective date of this AD, unless already accomplished
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Piper Models PA-31/PA-31-300, PA-31-325, PA-31-350, PA-31P, PA-31T, PA-31T1, PA-31T2, PA-31T3 with specified serial ranges as listed in the AD text.
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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