There are 3 Mong Sport MS-2 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.
N2031
Mong Sport MS-2
Okeechobee, FL
N51VV
Mong Sport MS-2
Berkeley, CA
N87L
Mong Sport MS-2
Saint David, AZ