- Effective
- June 30, 1959
- Published
- June 30, 1959
- Issued
- June 24, 1959
- Models
- PA-24, PA-24-250
- Data sheet
- TCDS1A15
- Registered aircraft
- 1,567 matched by model
- Product
- Aircraft · Small airplane
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 | 20 KB | cde5f24a…678a467 | FAA DRS (API key needed) |
On this page
The airworthiness directive
59-12-09 PIPER: Applies to PA-24 and PA-24 "250" Aircraft Serial Numbers 24-1 Through 24-764, 24-766 Through 24-779, 24-781 Through 24-820, 24-822 Through 24-842, 24- 844 Through 24-849, 24-851 Through 24-856, 24-858, 24-860 Through 24-865, 24-867 Through 24-871, 24-875, 24-878, 24-880, 24-881, and 24-885.
Compliance required not later than July 30, 1959.
Due to a recent inflight incident where control wheel sprocket stud P/N 20913-00 failed, inspect the sprocket stud P/N 20913-00 where the sprocket was attached on all aircraft that have or have had an automatic control system installed and ascertain that the stud is not cracked or twisted and the hole is not elongated. Parts found cracked or damaged are to be replaced before further operation.
(Piper Service Bulletin No. 172 covers this inspection in detail.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 1,567
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1954 | 1 |
|---|---|
| 1956 | 1 |
| 1957 | 6 |
| 1958 | 203 |
| 1959 | 345 |
| 1960 | 263 |
| 1961 | 216 |
| 1962 | 139 |
| 1963 | 109 |
| 1964 | 44 |
| 1965 | 2 |
| 1968 | 1 |
| 1969 | 1 |
| 1971 | 1 |
235 with no year recorded