Motivation – Discusses the human judgment in decision making, through the analysis of the flight instructor’s accuracy at the Brazilian Air Force Academy, when attributing grades to the cadets in flight training. Research approach – It is possible to increase elements to the studies of the Naturalistic Decision Making confronting the attributed grades in flight with those obtained by the cadets in an aptitude test for the military pilotage. Research limitations/Implications – This is ongoing work. A deeper exam of the psychological questions would possibly bring new insights to this study. Originality/Value – Taking grades obtained by the cadets in the aptitude test, a regression model was generated and it served as base for the verification of the accuracy of the instructors’ judgment. This analysis means a positive referential in the validation of the NDM, as well as their unfolding in the aviation, the Aeronautical Decision Making - ADM. Take away message – The results of this work are elucidating in subjects of interface man-computers.