- Effective
- December 1, 1975
- Models
- 707-100 Long Body, 707-100B Long Body, 707-100B Short Body, 707-200, 707-300 Series, 707-300B Series and 43 more
- Registered aircraft
- 50 matched by model
- Product
- Appliance
- Amendment
- 39-2404
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 | e4abf773…8f43678 | FAA DRS (API key needed) |
On this page
The airworthiness directive
75-22-13 LITTON SYSTEMS, INC., AERO PRODUCTS DIVISION: Amendment 39-2404. Applies to all LTN-72 inertial navigation systems installed on various airplane models, certificated in all categories, including, but not limited to, McDonnell Douglas DC-8 and DC-10 airplanes and Boeing 707 and 747 airplanes.
Compliance required as indicated prior to January 1, 1976 unless already accomplished.
To provide the required failure warning indication of power loss, accomplish Litton Service Bulletin No. 34-72-80, dated February 20, 1975, or later FAA-approved revision, or an equivalent installation approved by the Chief, Aircraft Engineering Division, FAA Western Region.
This amendment becomes effective December 1, 1975.
Affected TCDS · 5
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 50
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1968 | 2 |
|---|---|
| 1969 | 2 |
| 1970 | 2 |
| 1971 | 1 |
| 1972 | 1 |
| 1975 | 3 |
| 1976 | 2 |
| 1977 | 1 |
| 1978 | 1 |
| 1979 | 1 |
| 1980 | 1 |
| 1988 | 1 |
32 with no year recorded