Type certificate A11SO
Held today by Gulfstream Aerospace Corporation, earlier by DBA Gulfstream Aerospace Technologies\Twin Commander\Commander Aircraft\Trans American Air Transport\Frakes Aviation\Flying Boat\Schweizer. It covers 1 model. Last revised May 1, 1989 (revision 6). 43 approved modifications build on it.
Models under this certificate 1
111
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 43 · 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/A11SO.json.