SA1379WE
Installation of Brittain Industries Model B-4A Flight Control System. Held by Brittain Industries, INC, which holds 232 approved modifications in all. Last revised May 2, 2013. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation
- Models
- 35-33, 35-A33, 35-B33, 35-C33, 35-C33A
- Type certificates
- 3A15, 3A15, 3A15, 3A15, 3A15
- On this site
- Beechcraft 35 Bonanza and Debonair 1,077 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.