The Twin Commander 900 Medium Turbo-prop is manufactured by Aero Commander between 1979 and 1985. The cabin measures 9.2 feet long by 4.2 feet wide by 4.5 feet tall giving it a total cabin volume of 171.9 cubic feet making it comfortable for up to 5 passengers. The baggage compartment can hold up to 10.0 bags assuming your average piece of luggage is less than 5 cubic feet. The Twin Commander 900 has a maximum range (not including headwinds, high altitude, hot temperatures, or higher capacity) of 1,649 miles and a maximum speed of 310 mph. Common names and abbreviations: GC-690D, 840, Twin Commander 840/900, GC-690D.