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

SA3-372

Installation of Lycoming O-235-C1, -C1A, -C1B, -C1C, -C2A, -C2B, -C2C, -H2C, -K2A, -K2B, -L2A, or-L2C series engines and appropriate propellers or Teledyne O-200A, -B, or -C series engines and appropriate propellers. Held by Colman T. Wagner. Last revised July 8, 2009. System: propeller.

What it applies to

Kind of product
Aircraft
Design holder
American Champion Aircraft Corp.
Models
7AC
Type certificate
A-759
On this site
American Champion Aircraft 7 Citabria and Champ 429 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.