Frontier Airlines Convair 340

In 1959 Frontier Airlines began upgrading and replacing their Douglas DC-3 aircraft with Convair 340’s on local service air routes throughout the four corners states. Frontier flew in passengers from many remote towns in Arizona, Colorado, New Mexico, and Utah to hubs in Albuquerque and Farmington, New Mexico for making connections to rest of the United States. By the mid-1960’s, the Convair 340’s were equipped with new Allison 501 turboprop engines and the aircraft type was redesignated as the Convair 580. The 580’s would go on to serve Frontier until 1982 when Frontier became an all-jet airline.

The first photo below with many passengers is of Convair 340 No. N73130 “Sunliner Navajo” at the Farmington Municipal Airport c1960.