- Models
- DC-6, DC-6A, DC-6B
- Registered aircraft
- 17 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 | ed915135…7607c49 | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-42-12 DOUGLAS: (Was Mandatory Note 9 of AD-781-1.) Applies to DC-6 Serial Numbers 42866, and 42868 to 42875, Inclusive.
To be accomplished not later than February 1, 1948.
In order to provide adequate fastening of the rubber cushions on the reinforcing strap assembly of the astrodome, the following must be accomplished:
1. Remove the existing rubber strap cushions, P/N 5249604-36, all traces of cement and adhering rubber from reinforcing strap assembly, P/N 5249604-38.
2. Butt cushion assembly P/N 2356419 against pad P/N 5249604-42, locate and drill four No. 40 (0.098) holes through strap P/N 5249604-38 and attach with AN 426-AD-3-5 rivets.
3. Reinstall reinforcing strap assembly P/N 5249604-38, using eight AN 960-D-10L washers and eight AN 365-1032 nuts.
(Douglas Service Bulletin DC-6 No. 45 covers this same subject.)
Affected TCDS · 3
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 17
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1953 | 1 |
|---|---|
| 1954 | 2 |
| 1956 | 1 |
| 1957 | 3 |
| 1958 | 3 |
| 1959 | 1 |
6 with no year recorded