- Effective
- October 24, 1970
- Model
- 65-90
- Data sheet
- TCDS3A20
- Registered aircraft
- 7 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-1094
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 | c33aafb6…c6bf869 | FAA DRS (API key needed) |
On this page
The airworthiness directive
70-22-01 BEECH: Amendment 39-1094. Applies to Model 65-90 (Serial Numbers LJ-1 thru LJ-75) airplanes.
Compliance: Required as indicated, unless already accomplished.
To prevent overheat damage and fire hazard which may result from failure of the ventilating air blower for the fuel burning heater during ground operations, accomplish the following:
Within the next 50 hours' time in service, after the effective date of this AD, install Beech Differential Pressure Switch Kit No. 90-3053S in accordance with Beech Service Instruction No. 0372-412, or a later FAA approved revision or any equivalent modification submitted to and approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.
This amendment becomes effective October 24, 1970.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 7
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1964 | 1 |
|---|---|
| 1965 | 5 |
| 1966 | 1 |