Rogožarski AZR
The Rogožarski AŽR (Serbian Cyrillic:Рогожарски АЖР) was a single-engined, two-seat biplane aircraft designed as a trainer in Yugoslavia before World War II. It was designed and built at the Rogožarski factory in Belgrade. == Design and development == William Schuster, a flight engineer, designed the AŽR at the end of 1929.