The Heinkel HD 34 was a reconnaissance bomber built in Germany in the late 1920s.
== Design and development == The HD 34 was a twin-engine biplane designed for long-range reconnaissance. The center section had a front cockpit with side-by-side seating, with the third crewmember in the rear cockpit. On June 26, 1928, the HD.34 suffered damage on a test flight after losing control. It was decided, however, not to repair the aircraft due to high costs of repair.
== Specifications == Data from General characteristics Crew: 2-3 Length: 11.73 m (38 ft 6 in) Wingspan: 18.00 m (59 ft 1 in) Height: 4.84 m (15 ft 11 in) Wing area: 85.40 m2 (919.2 sq ft) Empty weight: 3,000 kg (6,614 lb) Gross weight: 4,500 kg (9,921 lb) Powerplant: 2 × BMW VI V-12 water-cooled piston engines, 560 kW (750 hp) each Propellers: 2-bladed fixed-pitch metal propeller Performance
Maximum speed: 266 km/h (165 mph, 144 kn) Cruise speed: 220 km/h (140 mph, 120 kn) Service ceiling: 7,600 m (24,900 ft) Armament
Guns: (planned) 2 × fixed, forward-firing 7.7 mm (0.303 in) machine guns Bombs: (planned) light bombs