SA526SW
Installation of Mitchell Automatic trim Model AK171. Held by Mitchell Industries, INC, which holds 31 approved modifications in all. Last revised June 18, 1965. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 206, 210-5 (205), 210-5A (205A), P206, U206
- Type certificates
- A4CE, 3A21, 3A21, A4CE, A4CE
- On this site
- Cessna 206 Stationair 213 registered
Cessna 210 Centurion 1,528 registered
Cessna P206 Super Skylane 163 registered
Cessna U206 Stationair 798 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.