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type, duty distributions, and event timing. Section 4.5 presents the process of undertaking the experiments and Section 4.6 depicts an overview of the results. Section
4.7 provides an analysis of the results and, finally, Section 4.8 concludes and summarises the chapter.
4.2 Types of Events, Assumptions and Rescheduling Rules
The objective of this experiment is to test whether CRSMAS is able to fulfil its purposes in all conditions. For this reason we chose different types of events. This
section discusses three types of events that we used in this experiment: lateness, delay, and unavailability. After this, the section discusses the assumptions and rules for crew
rescheduling. Based on the rules, the section provides examples for every event.
4.2.1 Types of Events
For this experiment we tested the system with three types of events: lateness, delay, and unavailable part of duty. In this research, lateness refers to the late coming of a crew for
a period of duty or for a breakrelief. We defined three types of lateness: late for sign-on LFSO, late for relief LFR, and late for second work LFSW. LFSO refers to a crew
arriving late to start hisher duty. LFR means that a crew is late for hisher relief because heshe is trapped in traffic or by other emergencies. LFSW denotes a crew is
late for hisher second work piece, which is after relief because of an emergency or something else that hinders the crew from arriving on time. The differences between
LFR and LFSW are that the event happens at a different time and the effect on crew schedules is not the same. In this research, we consider a period of lateness to be
between 15 and 60 minutes. Delay is similar to lateness although the time frame is different. We define delay as a
crew being unable to arrive on time because of emergency or other reasons. Two types of delay are defined in this research: delay for sign-on DFSO and delay for second
work DFSW. In this research we defined delay as between 80 to 180 minutes. Unavailability UNV refers to a crew being unable to continue hisher duty due to an
emergency reason such as sick while driving or accident. Someone else has to continue
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hisher duty. The result of UNV is the affected part of the duty not covered. In this research, we investigated UNV times of between 30 to 120 minutes.
4.2.2 Crew Rescheduling
