The BH-44 was a single-bay biplane of mixed construction, with wooden wings and a fabric covered, steel-tube fuselage.

Powerplant was a single Praga ESV water-cooled V12 engine.

A second prototype (sometimes called the EH-144), fitted with a supercharged Praga ESVK engine, flew in April 1934, but performance remained disappointing.

[1] The first prototype was therefore re-engined with a 480 kilowatts (650 hp) Rolls-Royce Kestrel VII, flying in this form on 30 October 1934, and as such was evaluated by the Czechoslovak Air Force as the E-44.

The imported Kestrel engine worked poorly with the fuel used by the Air Force, however, and the type was rejected, the B-34 being purchased instead.