planeshots: Formation flight Sunday. Caption: The five types of aircraft flown by North Central in its first 25 years are (from left) the Douglas DC-9 fan jet and Convair 580 Prop-jet since 1967; the Convair 440, introduced in 1959; the Douglas DC-3
planeshots: Formation flight Sunday. Caption: The five types of aircraft flown by North Central in its first 25 years are (from left) the Douglas DC-9 fan jet and Convair 580 Prop-jet since 1967; the Convair 440, introduced in 1959; the Douglas DC-3