There are 5 Yakovlev YAK-9U-M 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 1996 and 2000.
N6388U
2000 Yakovlev YAK-9U-M
Kingman, AZ
N4425S
1997 Yakovlev YAK-9U-M
Half Moon Bay, CA
N219Y
1996 Yakovlev YAK-9U-M
Texico, NM
N1157H
Yakovlev YAK-9U-M
Lewes, DE
N6373Y
Yakovlev YAK-9U-M
Lewes, DE