Type certificate TC 2-577
Held today by Douglas Aircraft CO. INC.. It covers 4 models. Last revised April 25, 1946 (revision 0). 4 approved modifications build on it.
Models under this certificate 4
Army B-18, Army B-18B, Army B-18A, Army B-18 (Special)
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 4 · 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/TC 2-577.json.