- Effective
- March 24, 1972
- Models
- DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F and 16 more
- Data sheet
- TCDSA6WE
- Registered aircraft
- 99 matched by model
- Product
- Aircraft · Large airplane
- Amendment
- 39-1413
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 | 3dd63954…2c62efc | FAA DRS (API key needed) |
On this page
The airworthiness directive
71-24-01 MCDONNELL DOUGLAS: Amdt. 39-1336 as amended by Amendment 39-1413. Applies to all DC-9 Series (except All-freighter) certified in all categories.
Compliance required within the next 100 hours' time in service after the effective date of this AD, unless already accomplished.
To prevent failure of the cabin ceiling lights rotary switch and circuit, accomplish the following:
Modify the ceiling light control wiring in accordance with either Douglas Aircraft Company Alert Service Bulletin A33-55, dated October 8, 1971, or later FAA-approved revisions, or Douglas Aircraft Company Service Bulletin No. 33-56, dated February 25, 1972, or later FAA-approved revisions, or other modification approved by the Chief, Aircraft Engineering Division, FAA Western Region.
Amendment 39-1336 was effective November 20, 1971.
This amendment 39-1413 is effective March 24, 1972.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 99
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1966 | 1 |
|---|---|
| 1967 | 4 |
| 1969 | 2 |
| 1970 | 1 |
| 1982 | 1 |
| 1986 | 1 |
| 1987 | 5 |
| 1988 | 4 |
| 1989 | 3 |
| 1990 | 3 |
| 1991 | 23 |
| 1992 | 5 |
| 1993 | 1 |
| 1994 | 1 |
| 1996 | 1 |
| 1997 | 6 |
| 1998 | 6 |
| 1999 | 16 |
15 with no year recorded