DHC-8 Q-400 Oregon BeaversQ 400 Alaska Air Oregon State University Beavers model aircraft. The Q400 is a twin engine turboprop aircraft manufactured by the Canadian company Bombardier. The "Q" in the name stands for "quiet", because the noise and vibration suppression system (NVS) prevent a large proportion interior and exterior noise, making the aircraft one of the quietest in its class. This aircraft type is also environmentally friendly because of its fuel economy and much