There are 3 Randkar XAIR aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 2008 and 2012.
N4490S
2012 Smith Matthew A X-AIR STANDARD
Centre, AL
N171AW
2008 Main David W XAIR STD
Quitman, TX
N43676
Morrison Neill J X-AIR STANDARD
Morganton, NC