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Type certificates · aircraft · large airplane · current

Type certificate 6A4

Held today by The Boeing Company, earlier by Mcdonnell Douglas Corporation. It covers 2 models. Last revised September 27, 2010 (revision 31). 96 approved modifications build on it.

Models under this certificate 2

Navy R6D-1Z, DC-6B

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 96 · companies holding the most

Aeronautical Engineers, INC 11Bellomy-Lawson Aviation INC 9Jay- Dee Aircraft Supply CO 4United Airlines INC 3Pacific Alaska Airlines INC 3National Aircraft CORP 3Everts Air Cargo 3Airesearch Aivation Service CO 3

Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 7, 2026. Connections as data: /graph/certificate/6A4.json.