SA450WE
Installation of Brittain/Clarkson or Beechcraft Autopilot. Held by Brittain Industries, INC, which holds 232 approved modifications in all. Last revised November 19, 2013. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation
- Models
- 23, A23-19, A23-24, A23, A23A, B23, C23
- Type certificates
- A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE
- On this site
- Beechcraft 23 147 registered
Beechcraft A23 329 registered
Beechcraft B23 62 registered
Beechcraft C23 Sundowner 457 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.