Peter Trenkner began his aviation career in the army as a fighter pilot on the L29, L39 and MIG 21 types. During his aviation life, he also replaced transport aircraft such as the L410, TU 134A and TU 154M. He worked for several civil airlines SkyEurope, SamAir, Pegasus, Go2Sky and also flew as Chief Pilot on Embraer 120 and Boeing 737 types.