Not an RK-26. It is not a German aircraft. It is designed by German designers and looks much like a German aircraft, but it is an "independent" local design, not far away from where the AEKKEA-Raab was built. Czech engine, according to Jane's 1946 and Wikipedia.
Last edited by RegDep; 18th Jan 2011 at 10:42.
Reason: Added clues