- Models
- 120, 140
- Data sheet
- TCDSA-768
- Registered aircraft
- 2,265 matched by model
- Product
- Aircraft · Small 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 | 18 KB | f9e04400…55b0bb1 | FAA DRS (API key needed) |
On this page
The airworthiness directive
46-44-04 CESSNA: (Was Mandatory Note 4 of AD-768-4.) Applies to 120 and 140 Aircraft Serial Numbers Up to and Including 9721.
Replacement required prior to December 1, 1946.
All U. S. Rubber Co. P-212 and P-212L Series flexible ducts installed in the carburetor hot air system should be replaced by U. S. Rubber Co. P-208-S duct or P-208 duct coated with neoprene by Cessna or its distributors.
(Cessna Service Letter No. 16-120 and 140 covers this same subject.)
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 2,265
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1946 | 1,013 |
|---|---|
| 1947 | 572 |
| 1948 | 206 |
| 1949 | 17 |
| 1954 | 4 |
| 1955 | 5 |
| 1956 | 3 |
| 1957 | 1 |
| 1959 | 1 |
| 1964 | 1 |
| 1978 | 1 |
| 2001 | 1 |
440 with no year recorded