SA232SO

Change Aeronca Model 7AC powerplant from Teledyne Continental Motors (TCM) model C65-8 to TCM model C85-12 or C85-12F or change Aeronca model 7BCM from TCM model C85-8 series engine to the C85-12 or C85-12F in accordance with Star Aircraft Company Instruction S.A. 301 and Report No. 300R. Either modification can use the Sensenich model 72GK propeller with pitch settings from 44 through 50 inches. The Notes Section of Type Certificate Data Sheet, P-170, has information concerning required plates, flange adapters, etc. Held by Lasher Charles David. Last revised July 23, 2003. System: propeller.

What it applies to

Kind of product: Aircraft
Design holder: American Champion Aircraft Corp.; American Champion Aircraft Corp.
Models: 7AC, 7BCM (Army L-16A)
Type certificates: A-759, 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.