SA659SO
Installation of Bendix M-4C automatic flight control system,including manual electric trim,and/or installation of Bendix YD-4 yaw damper. Held by Bendix Corporation Avionics Div, which holds 102 approved modifications in all. Last revised November 10, 1972. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Raytheon Aircraft Company; Raytheon Aircraft Company
- Models
- 60, A60
- Type certificates
- A12CE, A12CE
- 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.