Document Type


Date of Degree

Spring 2011

Degree Name

MS (Master of Science)

Degree In

Industrial Engineering

First Advisor

Schnell, Thomas

First Committee Member

Thomas, Geb W

Second Committee Member

Chen, Yong


Pilots are subject to varying levels of stress, workload, and fatigue during long flights. During different phases of a commercial flight, pilots are engaged in multiple tasks which include going through checklists, checking conditions at their destination, communicating with Air Traffic Control and dealing with other flight related tasks. The amount of work varies from the earlier stages until the end of the flight. It is not well understood how changes in the amount of workload can affect a pilot's ability to engage with important tasks that relate to safety of flight. The work shown in this thesis focused on the level of engagement displayed by flight crew as a function of level of workload. The principal hypothesis was that very low levels of workload may lead to crew disengagement and sub-optimal levels of performance. The degree to which pilots remain alert and are fatigued during a commercial flight is also not established in a concrete way.


Aviation, Fatigue, Human Factors, Response Times, Situation Awareness, Workload


vii, 76 pages


Includes bibliographical references (pages 74-76).


Copyright 2011 Ahmed Diken