Type 3-seat torpedobomber, anti-submarine and reconnaissance floatplane
Engine 2 Gnome-Rhône Jupiter VI 9 AB
Dimensions Length 16,00 m, height 4,25 m, span 24,00 m, wing area 93,42 m2
Weights Empty 3800 kg, loaded 6000 kg
Performance Max. speed 200 km/h, cruising speed 175 km/h, service ceiling 2300 m, climb to 1000 m 5,9 min., landing speed 89 km/h
Armament 2 movable machine guns, 1 torpedo or 1 37 mm cannon
Type Werk.Nr Registration History
26
 D-1552 First flight late Sept. 1927. Used at the Erprobungsstelle Travemünde and at the Torpedo-Versuchsstelle Eckernförde until it was scrapped in April 1937. Testing different versions of the Jupiter engine during this period.
In 1927, Heinkel completed a new aircraft, designated the HE.7,  a coastal reconnaissance floatplane capable of being used as a torpedo bomber.
It was a three-seat, strut-braced low-wing aircraft with a power plant that included two Gnome-Rhône Jupiter VI 9 AB Jupiter VI engines with an 450 hp power. With. (336 kW). Initially, the crew of the HE.7 aircraft consisted of two people, but then it was equipped with a cabin for the third crew member in the forward fuselage.
In the summer of 1927, the aircraft (D-1552) passed the entire set of tests, however, serious restrictions under the Versailles Treaty did not allow continuing work on the aircraft in Germany, and foreign customers were not interested in the aircraft.