TEMCO model 51 Pinto TT-1

First flown on 26 March of 1956, the prototype was tested by the U. S. Navy, which subsequently ordered 14 of the aircraft under the designation TT-1, to study the feasibility of using jet aircraft for primary training. No additional TT-1 Pinto aircraft were manufactured.

Also under development in response to the 1952 Air Force requirement was the Cessna T-37, a primary jet trainer powered by two Continental J69-T-9 turbojets, instead of the Pinto's one. 

That aircraft was accepted by the Air Force, with two prototypes being ordered, the first of which flew in October of 1954. 

Thus, in a situation where Temco appears to have entered the competition with too little, too late, the TT-1 Pinto had a very limited life.