Hopfner HV-4/28

The Hopfner HV-4/28 was a small airliner built in Austria in the late 1920s. An enlarged version of the HV-3/27, it was a conventional, high-wing cantilever monoplane with a fully enclosed cabin. A single example was built in 1928 and saw heavy use by the airline that year. In 1929, it received a major refurbishment that incliuded a change or powerplant from the original Heiro to a Gnome et Rhône 9A Jupiter engine and was sold to a private owner under the new designation HV-8/29GR. This aircraft was still flying at the time of the Anschluß, after which it received a new German registration.

Specifications (HV-4/28)
General characteristics

Crew: One pilot
Capacity: 4 passengers
Length: 11.00 m (36 ft 1 in)
Wingspan: 16.20 m (53 ft 2 in)
Height: 3.30 m (10 ft 10 in)
Wing area: 42.0 m2 (452 ft2)
Empty
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