I. Introduction
One of the key factors to the inferior flight operational performance of aircraft pilots and the quality of service crewmembers is fatigue [1],[2]. As a result, it poses a threat to the safety of transportation and passenger satisfaction. Numerous research have concentrated on investigating efficient techniques and psychophysiological markers for identifying and monitoring exhaustion with the goal of decreasing fatigue-related catastrophes and improving the quality of a flight trip [3],[4]. The development of fatigue monitoring technology is hampered by the fact that these indicators can only monitor the status in operation, while cannot instruct the rearrangement during the flight. Notably, the operation of a flight differs significantly from land transportation, which can stop at any time along the trip and make flexible adjustments of the driver and service members.