Type certificate ATC 311
Held today by The Waco Aircraft Company. It covers 1 model; about 35 aircraft on the U.S. register are built to it. 1 FAA order name its designs, and 15 approved modifications build on it.
Models under this certificate 1
RNF
On this site
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 1 · newest first
46-50-01 · Fuel line rework · fuel system
Approved modifications 15 · companies holding the most
Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 7, 2026. Connections as data: /graph/certificate/ATC 311.json.