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The Durand Mk V was a two-seat sports biplane aircraft developed in the United States in the 1970s and marketed for home building. The design was distinctive due to a large negative stagger on the wings, but was otherwise conventional. The single-bay wings were braced with I-struts, and while both upper and lower wings were equipped with full-span flaps, lateral control was by spoilers on the lower wing rather than ailerons. Flight testing revealed that the aircraft was impossible to stall. The pilot and single passenger sat side by side beneath an expansive canopy, and the undercarriage was of fixed, tricycle type.

Durand sold 75 sets of plans by 1987, and by that time, at least five aircraft (including the prototype) were known to be flying.
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​​Performance

Cruising speed: 217 km/h (135 mph)
Range: 644 km (400 miles)
Service ceiling: 4,575 m (15,000 ft)
Rate of climb: 6.1 m/s (1,200 ft/min)

Role                                         Sports plane
Manufacturer                    Homebuilt
Designer                                 William H. Durand
First flight                             28 June 1978
Number built                      at least 5 by 1987


General characteristics

Crew: One pilot
Capacity: 1 passenger
Length: 6.17 m (20 ft 3 in)
Wingspan: 7.47 m (24 ft 6 in)
Height: 2.03 m (6 ft 8 in)
Wing area: 13.3 m2 (144 ft2)
Empty weight: 549 kg (1,210 lb)
Gross weight: 834 kg (1,840 lb)
Powerplant: 1 × Lycoming O-320, 112 kW (150 hp) each

References [edit]
Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 347.
Jane's All the World's Aircraft 1987-88. London: Jane's Yearbooks. p. 658.