- 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 | 19 KB | 28731cba…52d659e | FAA DRS (API key needed) |
On this page
The airworthiness directive
48-25-02 CESSNA: Applies to All 120 and 140 Aircraft Equipped With Cessna Welded Exhaust Muffler Assemblies.
Inspection required each 25 hours of operation.
Remove the carburetor air heater muff and cabin heater muff and inspect the muffler assemblies for any evidence of cracks paying particular attention to the areas of the mufflers and stacks adjacent to where the exhaust stacks and tailpipe are welded to the muffler assembly. The present placard calling for inspection of the mufflers every 100 hours should be revised to call for this inspection every 25 hours. This directive is intended to apply to only those aircraft equipped with exhaust muffler assemblies that are fabricated by welding exhaust stacks to muffler.
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