There are 3 Quad City Ultralight Acft CHALLENGER II SPEC 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.
N5142F
1996 Quad City Ultralight Acft Corp CHALLENGER II SPEC
Red Bud, IL
N13KC
Quad City Ultralight Acft Corp CHALLENGER II SPEC
Nashua, MT
N5QC
Quad City Ultralight Acft Corp CHALLENGER II SPEC
Clinton, IA