Type certificate LTC-20
Held today by Krogmann Carl F., earlier by Martin-Marietta Corporation. It covers 1 model. Last revised June 6, 1947 (revision 2). 2 approved modifications build on it.
Models under this certificate 1
Martin (Navy) PBM-5
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 2 · companies holding the most
Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 22, 2026. Connections as data: /graph/certificate/LTC-20.json.