- Models
- 35, A35
- Data sheet
- TCDSA-777
- Registered aircraft
- 425 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 January 21, 2026.
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 | 9c614c0d…5aa11cb | FAA DRS (API key needed) |
On this page
The airworthiness directive
49-48-01 BEECH: Applies to All Models 35 and A35 Airplanes Equipped With Thompson TF-1100, TF-1100-1 or TF-1100M Engine Driven Fuel Pumps.
Compliance required not later than February 1, 1950.
To prevent complete or partial loss of carburetor fuel inlet pressure resulting from misalignment of pump relief, valve spring, replace Thompson TF-1100, TF-1100-1 or TF-1100M engine driven fuel pump with improved Thompson pump, TF-1100-M2 or TF-1100-2, or another eligible pump listed on Aircraft Specification A-777. Thompson TF-1100, TF-1100-1 and TF- 1100M pumps may be converted to TF-1100-M2 or TF-1100-2 pumps by the pump manufacturer.
(Beech Distributor Letter No. D-49-615 dated September 23, 1949, 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 · 425
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1947 | 171 |
|---|---|
| 1948 | 117 |
| 1949 | 42 |
| 1953 | 1 |
| 1955 | 1 |
| 1957 | 1 |
| 1962 | 1 |
91 with no year recorded