SA00855CH
Installation of S-TEC Corp. System 50 Automatic Flight Control System in a Cessna 150J with a 180 horsepower engine installed. Held by Seaway Aviation. Last revised April 1, 1998. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Cessna Aircraft Company
- Models
- 150J
- Type certificate
- 3A19
- On this site
- Cessna 150 7,993 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.