- Effective
- April 6, 1971
- Models
- 401, 401A, 401B, 402, 402A, 402B, 411, 411A
- Data sheet
- TCDSA7CE
- Registered aircraft
- 120 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-1185
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 | b6976dc6…d7d1df0 | FAA DRS (API key needed) |
On this page
The airworthiness directive
71-07-04 CESSNA: Amdt. 39-1185. Applies to Models 401 (Serial Numbers 401-0041 and up), 401A (all Serial Numbers), 401B (Serial Numbers 401B0001 thru 401B0052), 402 (Serial Numbers 402-0041 and up), 402A (all Serial Numbers), 402B (Serial Numbers 402B0001 thru 402B0030), 411 and 411A (Serial Numbers 411-0235 and up) airplanes.
Compliance: Required as indicated, unless already accomplished.
To assure safe operation of the emergency exit window, accomplish the following:
Within 50 hours' time in service after the effective date of this AD, modify the emergency exit window in accordance with Cessna Service Letter No. ME70-30 dated August 21, 1970, and Cessna Service Kit SK402-23 dated June 15, 1970, or by any equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.
NOTE: The installation of Cessna Service Kit SK402-23 does not require pulling the emergency release handle. If handle is inadvertently pulled, assure that existing emergency exit window retention pins are properly installed.
This amendment becomes effective April 6, 1971.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 120
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1965 | 3 |
|---|---|
| 1966 | 4 |
| 1967 | 13 |
| 1968 | 13 |
| 1969 | 12 |
| 1971 | 6 |
| 1972 | 7 |
| 1973 | 8 |
| 1974 | 3 |
| 1975 | 6 |
| 1976 | 3 |
| 1977 | 3 |
| 1978 | 6 |
33 with no year recorded