Assisted by 4 brothers, Frank Trella, Detroit, built 6 aircraft of original design from 1924. T-100–T-104 were biplanes, T-105 was high-wing monoplane and T-106 (September 1949) was side-by-side high-wing twin-boom pusher.
Assisted by 4 brothers, Frank Trella, Detroit, built 6 aircraft of original design from 1924. T-100–T-104 were biplanes, T-105 was high-wing monoplane and T-106 (September 1949) was side-by-side high-wing twin-boom pusher.