- Effective
- August 3, 1976
- Published
- July 29, 1976
- Issued
- July 20, 1976
- Models
- PA-31-325, PA-31-350
- Data sheet
- TCDSA20SO
- Registered aircraft
- 536 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-2680
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed November 21, 2025.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
| File | Size | SHA-256 | Original |
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| FAA DRS HTML | 20 KB | 8180558b…39f8c5a | FAA DRS (API key needed) |
On this page
The airworthiness directive
76-15-07 PIPER: Amendment 39-2680. Applies to Models PA-31-325, Serial Nos. 31-7400990, 31-7512006 through 31-7512058; PA-31-350, Serial Nos. 31-5001 through 31-7552108 certificated in all categories.
To prevent possible hazards in flight associated with loose elevator balance weights, accomplish the following within the next fifty hours in service from the effective date of this AD unless previously accomplished:
a. Alter the elevator balance weight attachment in accordance with Piper Elevator Balance Weight Modification Kits No. 761 040 applicable to Model PA-31-325 or No. 761 041 applicable to Model PA-31-350 or approved equivalent alterations.
b. Equivalent alterations must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
(Piper Service Bulletin Number 500 refers to this subject).
This amendment is effective August 3, 1976.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 536
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1973 | 14 |
|---|---|
| 1974 | 15 |
| 1975 | 28 |
| 1976 | 40 |
| 1977 | 44 |
| 1978 | 47 |
| 1979 | 60 |
| 1980 | 69 |
| 1981 | 58 |
| 1982 | 19 |
| 1983 | 14 |
| 1984 | 12 |
| 1996 | 1 |
115 with no year recorded