By the end of 1979, Yemenia had taken delivery of 4 brand new B-727-200 and 2DHC-7 in 1980. During the period of 1980 to 1990s, and with a fleet of 4 B727, B-737 and 2 DHC-7, Yemenia had undergone many developments in all aspects of its activities. It had set up a big program for training its human resources in Operation, Maintenance, and finance. In the infrastructure side had expanded its maintenance capability and introduced automatic reservation system and electronic data processing.