- Models
- D18C, D18S
- Data sheet
- TCDSA-765
- Registered aircraft
- 55 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 | cd099120…5e452ea | FAA DRS (API key needed) |
On this page
The airworthiness directive
48-13-01 BEECH: Applies to All D18S, D18C Airplanes Equipped With Pilot's Reclining Seats and Having the Generator Control Box Mounted on Bulkhead No. 5.
To be accomplished not later than July 1, 1948.
To prevent a short circuit between the hot terminal of the generator control box and bulkhead No. 5, rivet a 0.016 phenolic sheet 13/4 x 3 inches between the bulkhead web and the first horizontal angle immediately above the generator control box. The sheet should extend downward from the angle to the web cutout and provide positive insulation between the web and the hot post of the generator control box. If a phenolic strip has previously been installed at this point, an additional strip will not be necessary.
(Beech Service Letter No. D18-23 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 · 55
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1943 | 1 |
|---|---|
| 1945 | 3 |
| 1946 | 15 |
| 1947 | 2 |
| 1948 | 2 |
| 1949 | 1 |
| 1950 | 1 |
| 1951 | 2 |
| 1952 | 6 |
| 1953 | 4 |
| 1954 | 2 |
| 1958 | 1 |
| 1966 | 1 |
14 with no year recorded