- Effective
- February 17, 1971
- 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
- 39-1140
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.
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On this page
The airworthiness directive
71-01-05 MCDONNELL DOUGLAS: Amdt. 39-1140. Applies to DC-9 series airplanes certificated in all categories.
Compliance required within the next 500 hours time in service after the effective date of this AD, unless already accomplished.
To prevent failures in the deployment of the emergency evacuation slide, accomplish the following:
(a) Modify the Douglas Aircraft Company P/N 3753213-39 latch clip in accordance with Douglas Aircraft Company All Operators Letter (AOL) 9-370, dated November 17, 1969, or Revision A thereto, dated November 19, 1970, or later FAA approved revisions, to provide a notch in the latch clip at the point of interference with the clevis pin in the swaged head of the emergency evacuation slide deployment cable assembly, or
(b) Replace Douglas P/N 3753213-39 latch clip with Douglas P/N 3753213-99 latch clip, or
(c) An equivalent modification approved by the Chief, Aircraft Engineering Division, FAA Western Region.
This amendment becomes effective February 17, 1971.
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