Type certificate A7SO
Held today by Piper Aircraft INC.. It covers 5 models; about 998 aircraft on the U.S. register are built to it. Last revised April 9, 2019 (revision 24). 52 FAA orders name its designs, and 350 approved modifications build on it.
Models under this certificate 5
PA-34-200 (Seneca), PA-34-200T (Seneca II), PA-34-220T (Seneca III), PA-34-220T (Seneca IV), PA-34-220T (Seneca V)
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 52 · newest first
2024-06-062024-10-04 · Wing, Attach Fittings · airframe structure
2022-05-312022-09-13 · Nose/Tail Landing Gear · landing gear
2022-03-212022-03-15 · Fuel Quantity Indicator · fuel system
2021-01-052020-24-09 · Flight Controls · flight controls
2013-03-112013-02-13 · Stabilizer Control System · flight controls
2010-08-312010-15-10 · Control wheel shafts · landing gear
2009-04-032009-05-05 · Primary Flight Displays · instruments and avionics
2008-04-102008-06-28 · Primary flight display · instruments and avionics
Approved modifications 350 · 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/A7SO.json.