There are 6 Butler Aircraft AEROSTAR 601 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.
N601SH
1970 Butler Aircraft Company AEROSTAR 601
Henderson, NV
N7507S
1970 Butler Aircraft Company AEROSTAR 601
Texico, NM
N7UP
1970 Butler Aircraft Company AEROSTAR 601
El Paso, TX
N1222Z
Butler Aircraft Company AEROSTAR 601
Canyon Country, CA
N7502S
Butler Aircraft Company AEROSTAR 601
Prineville, OR
N7503S
Butler Aircraft Company AEROSTAR 601
New Cumberland, PA