In 1971 four de Havilland Canada DHC-6 Twin Otters were acquired, allowing the airline to retire some DC-3s which were transferred to the Malagasy military. By 1972, the airline was operating 737s on domestic flights to Tamatave, Nosy Be, Diego Suarez and Sambava, allowing for the retirement of two DC-4s. A second 737 was delivered in December 1972, seeing the expansion of routes and frequencies on the airline's network. In April 1974, service with the 737s was extended to Mananjary, Tuléar and Fort Dauphin.