Type certificate A1WI
Held today by Textron Aviation INC., earlier by Cessna Aircraft Company. It covers 4 models; about 1,968 aircraft on the U.S. register are built to it. Last revised January 5, 2026 (revision 34). 25 FAA orders name its designs, and 152 approved modifications build on it.
Models under this certificate 4
525, 525C, 525B, 525A
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 25 · newest first
2026-03-132026-03-06 · Vertical Stabilizer Structure, Nacelle/Pylon, Attach Fittings · airframe structure
2024-10-222024-15-09 · Gust Lock/Damper System · other and general
2021-04-292021-05-17 · NAVIGATION SYSTEM · instruments and avionics
2020-12-282020-24-06 · Flight Controls · other and general
2019-07-232019-12-09 · Navigation · instruments and avionics
2019-05-242019-08-13 · Flight Controls · other and general
2017-12-202017-22-14 · Navigation · instruments and avionics
2014-10-142014-18-01 · Navigation · instruments and avionics
Approved modifications 152 · 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/A1WI.json.