There are 3 Zenair ZODIAC CH640 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 2005 and 2018.
N640BW
2018 Walker Brian D ZODIAC CH640
Payson, AZ
N756GA
2010 Alexander Geoffrey L ZODIAC CH-640
Owasso, OK
N621J
2005 Adams Stephen ZODIAC CH640
Evans, GA