The Galaxy was based on a new wider fuselage, attached to a strengthened Astra SPX wing with integrated winglets and modified high-lift devices, powered by new 5,700-lb (25.3 kN) thrust Pratt & Whitney Canada PW306 turbofans, and with improved Pro Line 4 avionics and an all-new interior.
The Galaxy underwent a redesign featuring a wider fuselage coupled with a reinforced Astra SPX wing that included winglets and modified high-lift devices. It was equipped with new turbofans generating 5,700-lb (25.3 kN) of thrust, as well as improved Pro Line 4 avionics and an entirely new interior.