| Type | 2-seater Low-Wing Cantilever Monoplane |
| Wing | Single-spar trapezoidal-shaped wings built up entirely of wood and attached to the central portion by means of bolts. Automatic slots connected to trailing flaps The He 64a had the oval-shaped wing of later Heinkel-Models (He 70, He 111). However, due to the worse slowspeed-characteristics the later models all got the trapezoidal wing. |
| Fuselage | The fuselage has an oval cross section and a semicircular cabin structure of good aerodynamic design. The fuselage structure consists of bulkheads and longerons covered with three-ply, in which special doors are provided to facilitate an easy inspection of the inside of the fuselage.The steel tube engine mounting it attached to the first bulkhead. |
| Tail | The construction of the tail unit is similar to that of the main wing entirely by wood, covered with three-ply. |
| Landing Gear | Non-retractable, braced by streamline tubes. High-Pressure Disk-type wheels with brakes operated by a hand lever, hydraulically activated. Tailskid. |
| Crew | 2 seats in closed cabin, canopy formed aerodynamically efficient. |
3-plane view
Specifications
Dimensions, Load category
| Length | 8,31 m |
| Height | 2,06 m |
| Wing-area: | 14,4 m² |
| Wingload: | 54,2 kg/m² |
| Service load: | 5,20 kg/PS |
| Load category: | |
| Ultimate strength: | +7g |
Masses
| Empty weight: | 458 kg |
| Additiona equippage: | 12 kg |
| Dry operating weight: | 470 kg |
| Crew: | 160 kg |
| Fuel: | 95 kg |
| Oil: | 15 kg |
| Payload: | 40 kg |
| Max. Takeoff Weight: | 780 kg |
Speeds
| Max. Speed at Sealevel: | 245 km/h |
| in 1000 m height: | 238 km/h |
| in 2000 m height : | 220 km/h |
| Cruise speed in 0 m height : | 222 km/h |
| at 80% takeoff power: in 1000 m height : | 218 km/h |
| in 2000 m height : | 200 km/h |
| Min. approach speed: | 52 km/h |
Ranges
| Optimum Range at Vmax in 1000 m height: | 720 km |
| Optimum Range at Vcruise in 1000 m height: | 760 km |
| Optimum Range: | 1500 km |
Climb performance
| Climb to 1000 m height: | 3,9 Min. |
| 2000 m height: | 8,0 Min. |
| 3000 m height: | 12,8 Min. |
| Service Ceiling: | 6000 m |
Takeoff- and Landing-Performance
| Takeoff-Run: | 88 m |
| Takeoff-Distance to 15 m height: | 130 m |
| Landing-Distance from 15 m height: | 120 m |
Crew
| 1 Pilot, 1 Passenger (Dual steering) | |
Engine
| Powerplant: | Argus AS 8 R |
| Gear: | ./. |
| Takeoff-rating at 2100 U/min | 150 PS |
| Nominal rating at 2090 U/min | 135 PS |
| Nominal rating at 1800 U/min | 90 PS |
| Critical height | 0 m |
| Speciic Fuel consumption | 240 g/PSh |