The recent interpretations of fairness in slot allocation of flights are
considered as the word equity and upon these interpretations for fairness,
aviation agencies as airspace administrators along with stakeholders have been
applying ground delay problem procedure with ration by schedule and compression
algorithms as fair distribution of slots among them in reduced capacity
airports. The drawback of these approaches is that the slots to be allocated to
flights are all of the equal size or duration since the flights to be assigned
to slots can not be differentiated. In fact, the absence of a scientific
framework of fairness in air traffic management has led to the different
contradictory interpretations for it. As proposed in this study, fairness is
the minimum deviation from the planned outcome in terms of time, quantity and
quality under the optimum share management rule for each stakeholder. To
achieve fairness in slot allocation of the airport under reduced and normal
capacity, a new allocation rule of ration by fairness is proposed in which the
elements of time, quantity and quality are proposed to be the original time of
departure or arrival, slot size or duration, and airspace safety and preflight
checklist, respectively