- Model
- PA-12
- Data sheet
- TCDSA-780
- Registered aircraft
- 1,242 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 May 30, 2024.
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 | 19 KB | 03c1c627…8b0f04f | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-47-01 PIPER: (Was Mandatory Note 5 of AD-780-3.) Applies to PA-12 Aircraft Serial Numbers 12-221, 12-236, 12-239, 12-244, 12-250 and Up to 12-3561 and 12-3901 to 12- 3988.
Compliance required prior to January 15, 1948.
Reinforce the upper end of the tie strap on the landing gear with a 4130 steel plate (Piper No. 10028-13). Install over end of strap by edge welding. As further reinforcement, install a trapezoidal gusset plate (Piper No. 10028-14) on each side of this upper strap attachment by forming and edge welding on assembly.
(Piper Service Bulletin No. 97 dated July 10, 1947, covers this same subject.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 1,242
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1945 | 1 |
|---|---|
| 1946 | 415 |
| 1947 | 569 |
| 1948 | 2 |
| 1949 | 1 |
| 1952 | 1 |
| 1954 | 2 |
| 1955 | 3 |
| 1956 | 3 |
| 1957 | 1 |
| 1962 | 1 |
243 with no year recorded