In the early 1950s Temco initiated design of a lightweight primary jet trainer which it designated Model 51 Pinto. A cantilever mid-wing monoplane with retractable tricycle landing gear, accommodating the instructor and pupil in tandem in an enclosed cockpit, it was powered by a Continental J69-T-9 turbojet.

The prototype, first flown on 26 March 1956, was later tested by the US Navy, which then ordered 14 production aircraft under the designation TT-1. The first jet trainer in service with any of the US air arms, it was operated by the US Navy to study the feasibility of using jet aircraft for primary training. No further production followed, and plans for a Super Pinto attack trainer also failed.

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TT-1 Pinto, BuNo 144228, Naval Air test Center, Patuxent River, Maryland 1958. Flown by Lt.David Winer.
TT-1 Pinto, BuNo 144223, the first of the fourteen produced TT-1s, 1957.
TT-1 Pinto, BuNo 144234/404-2S, used for experimental pilot training in TT-1s, Saufley Field, NAS Pensacola, Florida, 1960.
TT-1 Pinto, BuNo 14426, Naval Air Test Center, Patuxent River, maryland, 1958.