- Effective
- April 4, 1977
- Published
- March 31, 1977
- Issued
- March 18, 1977
- Models
- PA-31, PA-31-325, PA-31-350
- Data sheet
- TCDSA20SO
- Registered aircraft
- 562 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-2860
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 |
|---|---|---|---|
| FAA DRS HTML | 21 KB | 176dff00…d6478f7 | FAA DRS (API key needed) |
On this page
The airworthiness directive
77-07-03 PIPER AIRCRAFT CORPORATION: Amendment 39-2860. Applies to models PA-31, PA-31-325, S/N's 31-7612090, 31-7612091, 31-7612092, 31-7612096, 31-7612098, 31-7612101 thru 31-7612105, 31-7612107 thru 31-7612110, and 31-7712002 thru 31-7712006; PA-31-350, S/N's 31-7652142 thru 31-7652147, 31-7652149, 31-7652151, 31-7652152, 31-7652154 thru 31-7652162, 31-7652164, 31-7652165, 31-7652167, 31-7652168, 31-7652171 thru 31-7652174, 31-7652176, 31-7752002 thru 31-7752007, 31-7752009 thru 31-7752011, 31-7752013, 31-7752014 and 31-7752017 thru 31-7752026.
Compliance required within 100 hours in service.
To prevent electrical terminals form shorting against the relay cover, accomplish the following:
(a) Replace the spacer bushings in accordance with the instructions given in Service Bulletin No. 535, dated December 15, 1976, or with an equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.
(b) Upon request, with substantiating data submitted through an FAA Maintenance Inspector, the compliance time specified in this AD may be increased by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.
This Amendment becomes effective April 4, 1977.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 562
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1968 | 4 |
|---|---|
| 1970 | 3 |
| 1971 | 1 |
| 1972 | 1 |
| 1973 | 16 |
| 1974 | 16 |
| 1975 | 28 |
| 1976 | 40 |
| 1977 | 46 |
| 1978 | 52 |
| 1979 | 60 |
| 1980 | 69 |
| 1981 | 58 |
| 1982 | 19 |
| 1983 | 14 |
| 1984 | 12 |
| 1996 | 1 |
122 with no year recorded