Type certificate 5E-13
Held today by Franklin Engine Company, earlier by Aircooled Motors (Military). It covers 1 model; about 1 aircraft on the U.S. register are built to it. 2 approved modifications build on it.
Models under this certificate 1
O-425-9
Engine series
The data sheet on the FAA's site: the approved engines and propellers, weights, speeds and limits for each model.
FAA orders on these designs 0 · newest first
None in the current files.
Approved modifications 2 · companies holding the most
Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 8, 2026. Connections as data: /graph/certificate/5E-13.json.