Type certificate TC 654
Held today by Frakes Aviation, earlier by Schweizer, Trans American Air Transport. It covers 2 models. Last revised March 4, 1981 (revision 0). 56 approved modifications build on it.
Models under this certificate 2
G-21, G-21A (Army OA-9; Navy JRF-1; -2; -3; -4; -5; and -6B)
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 56 · companies holding the most
Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 5, 2026. Connections as data: /graph/certificate/TC 654.json.
