There are 4 Revolution Helicopter MINI-500 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 1999 and 2011.
N542JH
2011 Higginbotham John P REVOLUTION MINI 500
Clinton, TN
N202DE
1999 Ege Douglas L MINI 500
Belton, MO
N249GB
Spitzer Craig A MINI-500
Colton, OR
N468RS
Sugden Richard MINI 500
Wilson, WY