Aim Pilot training has always been a relatively expensive undertaking. So attempts to control these costs by predicting the likelihood of success or failure is a constant that is almost as old as aviation itself. Incorporation of Psychometric testing was made to pilot selection in the years between the first and second world wars. Despite the many changes that have occurred in this area, psychometric testing continues to feature in modern systems of pilot aptitude testing. This paper reviews some of the history of psychometric testing in pilot selection.