Type certificate E-186
Held today by Pratt & Whitney Division. It covers 6 models. Last revised March 4, 1960 (revision 4). 8 approved modifications build on it.
Models under this certificate 6
Twin Wasp S1C-G, Twin Wasp S3C4-G, Twin Wasp SC-G, Twin Wasp S1C3-G, Twin Wasp SC3-G, Twin Wasp S4C4-G
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 8 · 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/E-186.json.