Type certificate TC 2-555
Held today by Delong CORP.. It covers 1 model. 5 approved modifications build on it.
Models under this certificate 1
Boeing F4B4
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 5 · 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/TC 2-555.json.