AD 76-04-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-31 | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA-31-325, PA-31-350, PA-31P, and PA-31T Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-300 | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA-31-325, PA-31-350, PA-31P, and PA-31T Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-325 | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA-31-325, PA-31-350, PA-31P, and PA-31T Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31-350 | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA-31-325, PA-31-350, PA-31P, and PA-31T Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31P | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA-31-325, PA-31-350, PA-31P, and PA-31T Airplanes |
| aircraft | Piper Aircraft Inc. | PA-31T | Airworthiness Directives; Piper Models PA-31, PA-31-300, PA-31-325, PA-31-350, PA-31P, and PA-31T Airplanes |
Unsafe Condition
Loose bolts attaching the control shaft collar to the control shaft tube could cause possible hazards in flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Alter the attachment of the control shaft collar to the control shaft tube in accordance with Piper Service Letter No. 643 and paragraphs one through eight of Piper Service Bulletin No. 487 or approved equivalent alteration. Equivalent alterations require approval by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
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Compliance Time
within the next fifty hours in service from the effective date of this AD unless previously accomplished
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Affected Aircraft
Piper Models PA-31, PA-31-300, PA-31-325, PA-31-350, PA-31P, and PA-31T with specific serial ranges: PA-31/PA-31-300/PA-31-325 (31-2 through 31-7612009); PA-31-350 (31-5001 through 31-7612018); PA-31P (31P-1 through 31P-7630001 and 31P-7630003); PA-31T (31T-7400002 through 31T-7620002, 31T-7620004, 31T-7620005, 31T-7620007)
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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