Type certificate ATC 540
Held today by Douglas Aircraft CO. INC.. It covers 3 models. 7 approved modifications build on it.
Models under this certificate 3
Army C-39, Army C-42, DC-2 (Army C-32; C-32A; C-34; Navy R2D-1)
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 7 · 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 540.json.