- Models
- DC-7, DC-7B, DC-7C
- Data sheet
- TCDS4A10
- 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 | 20 KB | 422c3022…511132e | FAA DRS (API key needed) |
On this page
The airworthiness directive
59-02-02 DOUGLAS: Applies to All DC-7 Series Aircraft.
Compliance required as indicated.
There have been several incidents of the engine cowling moving forward in flight and striking the propeller. This has been caused by incorrect installation of the cowling on its mountings. In order to prevent incorrect installation of the cowling, more positive means of indexing and aligning must be provided. Pending installation of these means, special inspections are established.
(1) Effective at next cowl removal, unless modification per paragraph (2) has already been accomplished, perform a special inspection each time any segment of cowl is removed and replaced to assure that cowl indexing means are in satisfactory condition and that cowling is properly positioned.
(2) Not later than November 1, 1959, install improved supports for indexing and aligning the top left and right-hand cowling segments of each of the four powerplants. Douglas Service Bulletin No. 131 dated August 21, 1956, revised February 5, 1958, covers an acceptable means of accomplishing this change.
Affected TCDS · 1
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.
| 1957 | 1 |
|---|---|
| 1958 | 2 |
2 with no year recorded