Type certificate 4A21
Held today by The Boeing Company. It covers 4 models; about 9 aircraft on the U.S. register are built to it. Last revised May 1, 1973 (revision 8). 219 FAA orders name its designs, and 238 approved modifications build on it.
Models under this certificate 4
707-100B Short Body, 707-200, 707-100 Long Body, 707-100B Long Body
On this site
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 219 · newest first
2026-07-012026-13-15 · Navigation · instruments and avionics
2023-06-212023-12-15 · Navigation · instruments and avionics
2023-05-262023-10-02 · Indicating/Recording System, Navigation · instruments and avionics
2023-02-162022-25-01 · Wings · airframe structure
2022-05-232022-09-18 · Navigation · instruments and avionics
2020-03-182020-03-11 · Fuel · engine
2018-12-282018-23-12 · Equipment/furnishings · emergency equipment
2018-11-022018-19-32 · Nacelles/pylons · engine
Approved modifications 238 · 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/4A21.json.