- Models
- 202, 202A, 404
- Registered aircraft
- 5 matched by model
- Product
- Aircraft · Large 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 | 857d2fe8…a0cc342 | FAA DRS (API key needed) |
On this page
The airworthiness directive
56-09-02 MARTIN: Applies to All Models 202, 202A, and 404 Aircraft.
Compliance required by September 1, 1956.
In order to eliminate shearing of rivets securing the rudder torque tube flange, P/N 2021U42196, to the rudder torque tube, P/N 2021D19331, caused by gust buffeting with gust locks not engaged and resulting in loss of adequate and/or positive rudder control, it is necessary to replace the 3/16-inch rivets with 1/4-inch 24ST heat treated rivets.
(Martin Service Instruction Letters No. 202/202A-36 and No. 404-69 cover this same subject.)
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 5
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1952 | 3 |
|---|---|
| 1964 | 1 |
1 with no year recorded