SA5147SW-D
Installation of S-TEC System 60 pitch stabilization system ST-125 with optional automatic electric trim system. Held by S-Tec Corporation, which holds 1,083 approved modifications in all. Last revised November 28, 1984. 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; Beechcraft Corporation; Beechcraft Corporation; Beechcraft Corporation
- Models
- 23, A23-24, A23, A23A, A24, A24R, B23, B24R, C23, C24R
- Type certificates
- A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE, A1CE
- On this site
- Beechcraft 23 147 registered
Beechcraft A23 329 registered
Beechcraft A24 49 registered
Beechcraft B23 62 registered
Beechcraft B24 117 registered
Beechcraft C23 Sundowner 457 registered
Beechcraft C24 176 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.