SA1893CE
Installation of speed command of attitude and thrust and wind shear system (SCAT/WS), performance command system (PCS), thrust management system (TMS), angle of attack (A0A), wind shear(WS) system, and various combinations of the SCAT/WS, PCS, and TMS systems with an autopower system. Held by Safe Flight Instrument CORP, which holds 22 approved modifications in all. Last revised December 10, 1984. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company
- Models
- 551
- Type certificate
- A27CE
- On this site
- Cessna 551 34 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 21, 2026.