There are 4 Summa 369D 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 1977 and 1980.
N100AT
1980 Summa Corp 369D
Hermosa Beach, CA
N262WA
1979 Summa Corp 369D
Puunene, HI
N719KV
1979 Summa Corp 369D
Kilauea, HI
N711KV
1977 Summa Corp 369D
Kilauea, HI