Type certificate A-593
Held today by Sikorsky Aircraft Corporation. It covers 3 models. Last revised March 1, 1954 (revision 2). 10 approved modifications build on it.
Models under this certificate 3
S-43, S-43W, S-43B
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 10 · 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/A-593.json.