The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · issued

SA890SW

Medairco Automatic Fuel Alert F-2. Held by Medairco. Last revised January 1, 1960. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company; The Cessna Aircraft Company
Models
172, 182, 175, 150, 210 Series, 185, 180, 177, 206
Type certificates
3A12, 3A13, 3A17, 3A19, 3A21, 3A24, 5A6, A13CE, A4CE
On this site
Cessna 150 7,993 registered
Cessna 172 Skyhawk 20,676 registered
Cessna 175 Skylark 925 registered
Cessna 177 Cardinal 2,158 registered
Cessna 180 Skywagon 2,605 registered
Cessna 182 Skylane 11,831 registered
Cessna 185 Skywagon 227 registered
Cessna 206 Stationair 213 registered
Cessna 210 Centurion 1,528 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.