One single aircraft of
three-seated version of the ”Hansa”, Heinkel HE 4 was ordered by the
Navy. This aircraft was built by Heinkel in Germany and delivered in
1926. It got the Navy number 47. It was designated S
4 in the Air Force and was scrapped in 1931 after 910 flying hours.
The S 4 was powered by a
Rolls Royce Eagle IX engine of 369 hp. It was armed with one 7,9 mm
machine-gun m/22.
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