Randolph F. Hall, with other ex-employees of Thomas-
Morse Aircraft Corporation, formed this company at
Rochester, NY, in 1928, in collaboration with the U.S. automobile company James Cunningham, Son & Co. First aircraft
was a six-seat passenger transport (twin-engined
PT-6), but only two built. Followed by Model X-90(N)
tandem two-seat biplane with special high-lift wings,
entered for 1929 Guggenheim Safe Airplane Competition.
A developed version (also high-lift wings) led to GA-
21M all-metal monoplane in 1934, which reappeared
after a year or so as GA-36 with Super Scarab engine. In
1937 built PT-6F biplane light freighter, a two-seat development
of PT-6 with 512kg payload and Wright
Whirlwind engine. Company ceased building complete
aircraft and produced subcontract aircraft components
for other firms during Second World War. It was dissolved
in 1948.
