- Models
- 11AC, 7AC
- Registered aircraft
- 2,687 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 | 18 KB | f09550f7…56d3296 | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-20-02 AERONCA: (Was Mandatory Note 2 of AD-761-2 and Mandatory Note 2 of AD-759-3.) Applies to 7AC Airplanes Having Serial Numbers 226 to 3721; and 11AC, Serial Numbers 1 to 351.
Compliance required at next periodic inspection but not later than August 1, 1947.
To prevent the oleo strut assembly from separating in flight, replace the fiber piston with aluminum pistons. (Supplementary to Aeronca Service Helps and Hints No. 12 dated February 11, 1947, covers this same subject.)
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 2,687
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1940 | 1 |
|---|---|
| 1944 | 1 |
| 1945 | 102 |
| 1946 | 1,858 |
| 1947 | 200 |
| 1948 | 7 |
| 1949 | 2 |
| 1950 | 1 |
| 1951 | 2 |
| 1952 | 1 |
| 1953 | 1 |
| 1954 | 4 |
| 1955 | 4 |
| 1956 | 1 |
| 1957 | 1 |
| 1958 | 3 |
| 1959 | 2 |
| 1960 | 1 |
| 1962 | 1 |
| 1963 | 1 |
| 1971 | 1 |
| 1976 | 2 |
| 2002 | 1 |
489 with no year recorded