The Commander 685 was a piston-engined variant of the turboprop-powered Rockwell Commander 690, with two wing-mounted 435 hp Continental GTSIO-520K piston engines in tractor configuration with three-bladed Hartzell feathering propellers. It is a high-wing cantilever monoplane with an enclosed nine-seat cabin and a retractable nose-wheel landing gear. The Model 685 was type certified by the Federal Aviation Administration on 17 September 1971.
Specifications
Data from Jane's All the Worlds Aircraft 1976–77[3]
General characteristics
Crew: 1–2
Capacity: 7–8 passengers
Length: 42 ft 11+3⁄4 in (13.10 m)
Wingspan: 46 ft 6.6 in (14.19 m)
Height: 14 ft 11+1⁄2 in (4.56 m)
Wing area: 266 sq ft (24.7 m2)
Empty weight: 6,021 lb (2,731 kg)
Max takeoff weight: 9,000 lb (4,082 kg)
Fuel capacity: 256 US gal (213 imp gal; 970 L) standard, 322 US gal (268 imp gal; 1,220 L) with auxiliary tanks