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