The development of the 312T began in 1974, as it became apparent that problems with the handling of the then current 312B3 chassis could not be solved, and a radical re-think was required.
O desenvolvemento do 312T iniciouse en 1974, cando se fixo evidente que os problemas de manexo do chasis do 312B3 vixente nese momento non podían ser resoltos, e requeriase un cambio novo e radical.