In 2004 the company announced its plan to design and construct a two-engined utility aircraft that would carry up to 14 passengers or 4000 lb (1800 kg) of cargo, and operate from unimproved fields and at high-altitude airports. The aircraft will have three configurations: passenger transport, cargo transport and combined operations with space in front for cargo and passenger accommodation aft.
The EV-55 is of conventional high-wing utility design, with its horizontal stabilizer mounted near the top of its fin. The prototype aircraft is powered by two Pratt & Whitney PT6A-21 turboprop engines (536 shaft horsepower), each driving a four-blade propeller. The wing is mounted atop a nearly-square fuselage, which has five windows per side. The trailing-link tricycle landing gear retracts into the nose section or pods on the lower fuselage. Expected maximum cruise speed is 220 knots (407 kph).
The first prototype, an EV-55M (military version), flew from Kunovice Airport in June 2011, with company pilot Josef Charvat and military pilot Maj. Jiri Hana at the controls.