| AD Number | 76-04-11 | Status | Active |
| Effective Date | March 05, 1976 | Issue Date | February 20, 1976 |
| Docket Number | Unknown | Amendment | 39-2532 |
| Product Type | ["Aircraft"] | Product Subtype | ["Small Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | --- - _EMPTY_ |
| Citation | This information is not available. | ||
| Manufacturer(s) | Piper Aircraft Inc. |
| Model(s) | PA-31 PA-31-300 PA-31-325 PA-31-350 PA-31P PA-31T |
76-04-11 PIPER: Amendment 39-2532. Applies to Models PA-31, PA-31-300, and PA- 31-325, Serial Numbers 31-2 through 31-7612009; Model PA-31-350, Serial Numbers 31-5001 through 31-7612018; Model PA-31P, Serial Numbers 31P-1 through 31P-7630001 and 31P-7630003; Model PA-31T, Serial Numbers 31T-7400002 through 31T-7620002, 31T-7620004, 31T-7620005 and 31T-7620007, certificated in all categories.
To prevent possible hazards in flight associated with loose bolts which attach the control shaft collar to the control shaft tube, accomplish the following within the next fifty hours in service from the effective date of this AD unless previously accomplished.
(a) Alter the attachment of the control shaft collar to the control shaft tube in accordance with Piper Service Letter No. 643 and the directions contained in paragraphs one through eight of the "Instructions" section of Piper Service Bulletin No. 487 or approved equivalent alteration.
Equivalent alterations must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
This amendment is effective March 5, 1976.