Type certificate E-307
Held today by Rolls-Royce Limited, earlier by Bristol Siddeley\Rolls-Royce Plc, Rolls-Royce Plc. It covers 9 models; about 2 aircraft on the U.S. register are built to it. Last revised February 6, 1981 (revision 14). 1 approved modification build on it.
Models under this certificate 9
Avon 522, Avon 525B, Avon 526, Avon 524B, Avon 532R-B, Avon 533R-11A, Avon 531, Avon 533R, Avon 527
Engine series
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 1 · 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/E-307.json.