There are 16 Helio H-391B 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 1954 and 1958.
N10CJ
1958 Helio H-391B
Fairbanks, AK
N4138D
1958 Helio H-391B
Vacaville, CA
N4139D
1958 Helio H-391B
Monroe, WA
N4120D
1957 Helio H-391B
Underhill, VT
N4121D
1957 Helio H-391B
Weirsdale, FL
N4123D
1957 Helio H-391B
Graham, WA
N12620
1956 Helio H-391B
Drummond Island, MI
N289LM
1956 Helio H-391B
Franktown, CO
N4119D
1956 Helio H-391B
Nunica, MI
N565JS
1956 Helio H-391B
Waller, TX
N888W
1956 Helio H-391B
Santee, CA
N242B
1954 Helio H-391B
Underhill, VT
N173K
Helio H-391B
Wasilla, AK
N4431U
Helio H-391B
South Rockwood, MI
N62HC
Helio H-391B
Nunica, MI
N8750R
Helio H-391B
Port Townsend, WA