- Effective
- September 8, 1961
- Models
- 1049-54, 1049B-55 (Navy R7V-1), 1049C-55, 1049D-55, 1049E-55, 1049F-55 (USAF C-121C) and 8 more
- Registered aircraft
- 3 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 | 08a5fb4d…12fa335 | FAA DRS (API key needed) |
On this page
The airworthiness directive
61-19-03 LOCKHEED: Amdt. 338 Part 507 Federal Register September 20, 1961. Applies to All 049, 149, 649, 749, and 1049 Series Aircraft.
Compliance required as indicated.
As a result of findings during investigation of a recent Lockheed Model 049 aircraft fatal accident, it is necessary to require the following corrective action.
Unless already accomplished within the last 50 hours' time in service, the following special inspection is required at the first layover or stop where qualified maintenance personnel and facilities are available and the inspection can be conducted without undue delay but not to exceed the next 25 hours' time in service after the effective date of this AD. Inspect to ensure that the 5 bolts, nuts, and cotter pins in the parallelogram linkage between the elevator boost valve and boost mechanism are properly secured and safetied.
This directive effective September 20, 1961, for all persons except those to whom it was made effective immediately by telegram dated September 8, 1961.
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 3
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1946 | 1 |
|---|---|
| 1949 | 1 |
| 1959 | 1 |