OMTA began its operations on January 28, 1946 as an air charter company, the first of its kind in Brazil. Later OMTA also operated some scheduled flights. On July 20, 1950 it was bought by Transportes Aéreos Nacional. OMTA operated as an autonomous unity for sometime but eventually in 1957 it was absorbed by Nacional.
^Instituto Histórico-Cultural da Aeronáutica (2005). História Geral da Aeronáutica Brasileira: de janeiro de 1946 a janeiro de 1956 após o término da Segunda Guerra Mundial até a posse do Dr. Juscelino Kubitschek como Presidente da República (in Portuguese) 4. Rio de Janeiro: GR3 Comunicação & Design. p. 354.
^Pereira, Aldo (1987). Breve História da Aviação Comercial Brasileira (in Portuguese). Rio de Janeiro: Europa. pp. 298–299.