SA860SW
Mitchell automatic flight system AK256 consisting of Century III autopilot with optional automatic pitch trim, radio coupler. Held by Century Flight Systems INC, which holds 765 approved modifications in all. Last revised June 29, 1984. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Alliance Aircraft Group LLC; Alliance Aircraft Group LLC
- Models
- H-250, H-295 (USAF U-10D)
- Type certificates
- 1A8, 1A8
- On this site
- Helio H-250 11 registered
Helio H-295 54 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.