A flight simulator experiment was set up to study relevant human factors tools for situation awareness assessment of pilots. A specific scenario was designed in which a malfunction of the aircraft was introduced during flight: an indicated air speed discrepancy. Pilot behavior was studied while pilots tried to figure out the correct speed. Eye movement metrics alone provided an insufficient picture of pilot situation awareness, but when purposefully combined with subjective, self-rating metrics, they offered a more comprehensive look at situation awareness, covering all 3 levels of Endsley's situation awareness definition.Over the past two or three decades, the concept of situation awareness (SA) has received considerable attention from the human factors (HF) research community. Although originally a term used within (military) aviation, SA has developed as a major concern in many other domains where people operate complex, dynamic systems (e.g., maintenance, air traffic control, medical systems, and the nuclear power industry). Achieving SA is one of the most challenging aspects of these operators' jobs and is central to good decision making and performance. This stems largely from a growing concern with the effects of widespread automation and advanced information systems on the ability of humans to take in and comprehend exactly what is going on without becoming confused, overloaded, or error-prone. As a consequence, valid and meaningful measures of SA are required to help us assess the design and use of complex systems in simulations Correspondence should be sent to Henk van Dijk, Air Transport Training Simulation and Operator