Type certificate A29SO
Held today by Head Balloons INC.. It covers 6 models; about 197 aircraft on the U.S. register are built to the designs it names. Last revised April 8, 2009 (revision 6). 1 FAA order name its designs, and 14 approved modifications build on it.
Models under this certificate 6
AX7-77b, AX9-118, AX8-88, AX7-77, AX8-105, AX8-88b
On this site
Head Balloons Inc AX7 56 registeredHead Balloons Inc AX8 116 registeredHead Balloons Inc AX9 25 registered
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 1 · newest first
2013-03-192013-03-10 · Hardware · other and general
Approved modifications 14 · 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/A29SO.json.