1950s The 1950s, saw the airline's growth slow, though the fleet was modernized with the addition of Douglas DC-6s, and staff training improved with the opening of a flight attendant school. The DC-6s were put to work on the Mexico City to Puerto Vallarta and Mexico City to Oaxaca routes. Service to San Antonio, Texas began later in the decade.
1950s The 1950s saw the airline's growth slow though the fleet was modernized with the addition of Douglas DC-6s and staff training improved with the opening of a flight attendant school The DC-6s were put to work on the Mexico City to Puerto Vallarta and Mexico City to Oaxaca routes Service to San Antonio Texas began later in the decade