the propeller. The E-45 first flew on 8 October 1934, with Smetena at the controls. By then a large order for the competing Avia 534 had been placed (August 1934) and the E-45 could only act as a reserve in case of production or other problems with the Avia, even though it seems to have flown quite well. No more were built and the sole example of the Praga E-45 eventually received a civil registration, OK-ERR in April 1938, after which nothing was heard of it. Specifications (wheel fairings, enclosed cockpit, metal airscrew) Citations Cited sources E-45 1930s Czechoslovakian fighter aircraft Single-engined tractor aircraft Biplanes Aircraft first flown in 1934