In the M–T–E (man – technology – environment) system, human has a main influence on aircraft. In the article focused on M–T relations, which means human – technology, more accurately on a man impact on a plane, which is specify as human factor [3]. The role of human in this system can lead to an accident, caused by human mistake. In this article fa main question is how man effects on maintenance aircraft. To purpose the analysis the research was made with use of technical object – a simulator, which is located in Simulator Research Laboratory in Institute of Combustion Engines and Transport at Poznan University of Technology. The subject of analysis was a correctness of performing procedures, which every pilot is obligated to make before st...