- Effective
- May 12, 1977
- Published
- May 9, 1977
- Issued
- April 28, 1977
- Models
- PA-23-250, PA-23-250 (Navy UO-1), PA-24-260, PA-30, PA-31, PA-31-300 and 3 more
- Registered aircraft
- 2,917 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-2892
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 | 14a13d5c…a6bf771 | FAA DRS (API key needed) |
On this page
The airworthiness directive
77-09-10 PIPER AIRCRAFT CORP: Amendment 39-2892. Applies to models:
PA-23-250 (6 place) S/Nos. 27-3837, 27-3944 to 27-4796 inclusive PA-24-260 S/Nos. 24-4783, 24-4804 to 24-5047 inclusive PA-30 S/Nos. 30-1717, 30-1745 to 30-2000 inclusive PA-31 and 31-300 S/Nos. 31-2 to 31-797 inclusive PA-31-350 S/Nos. 31-5001 to 31-5004 inclusive PA-31P S/Nos. 31P-1 to 31P-109 inclusive PA-39 S/Nos. 39-1 to 39-155 inclusive
Compliance required within the next 100 hours in service after the effective date of this AD, unless already accomplished.
(a) Modify the electric trim switch in accordance with instruction paragraph of Piper Service Bulletin No. 527, dated November 5, 1976, or 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 adjusted by the Chief, Engineering and Manufacturing Branch, FAA Eastern Region.
This amendment becomes effective May 12, 1977.
Affected TCDS · 5
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 2,917
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1953 | 1 |
|---|---|
| 1957 | 1 |
| 1960 | 33 |
| 1961 | 13 |
| 1962 | 21 |
| 1963 | 101 |
| 1964 | 234 |
| 1965 | 275 |
| 1966 | 387 |
| 1967 | 181 |
| 1968 | 111 |
| 1969 | 216 |
| 1970 | 68 |
| 1971 | 71 |
| 1972 | 46 |
| 1973 | 68 |
| 1974 | 71 |
| 1975 | 56 |
| 1976 | 76 |
| 1977 | 64 |
| 1978 | 67 |
| 1979 | 90 |
| 1980 | 64 |
| 1981 | 63 |
| 1982 | 16 |
| 1983 | 12 |
| 1984 | 11 |
| 1985 | 1 |
| 1995 | 1 |
| 1996 | 1 |
497 with no year recorded