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The Hopfner HA-11-33 was an amphibious flying boat built in Austria in 1933 to a specification by the Dr. Oetker company for such an aircraft. The result was a conventional high-wing cantilever monoplane with a stepped flying boat hull and pontoons on struts under the wings at mid-span. The cabin was fully enclosed and the twin engines were mounted tractor-fashion on struts above the wing.

Made by Hopfner (aircraft manufacturer)Wiener-Neustädter-Flugzeugwerke.

Empty Weight Lb
2420
Wing Area Sqm
30
Designer
Theodor Hopfner
Eng 1 Type
Siemens Sh 14a
Ceiling Ft
14800
Eng 1 Kw
94
Span In
4
Gross Weight Lb
3960
Capacity
3
Crew
One pilot
Empty Weight Kg
1100
Gross Weight Kg
1800
Height In
4
Range Km
900
Manufacturer
Hopfner (aircraft manufacturer)
Wiener-Neustädter-Flugzeugwerke
Range Miles
560
Max Speed Mph
120
Max Speed Kmh
190
Height Ft
10
Span Ft
46
National Origin
Austria
Wing Area Sqft
327
Met Or Eng
met
Span M
14
Length Ft
33
Height M
3
Ceiling M
4500
Eng 1 Hp
125
Eng 1 Number
2
Length In
4
Length M
10
Category
Austrian civil utility aircraft 1930-1939
Hopfner aircraft
Seaplanes and flying boats

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