There are 4 Taylorcraft F-21A 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 1982 and 1984.
N4417A
1984 Taylorcraft Corp F-21A
Santa Rosa, CA
N2006C
1982 Taylorcraft Corp F-21A
Frazer, MT
N2006L
1982 Taylorcraft Corp F-21A
Palmer, AK
N2006S
Taylorcraft Corp F-21A
Cloquet, MN