You probably have: departing aircraft hold short using taxiway K by default (at the displaced threshold). Consequently, long lines of departing aircraft await takeoff obstructing taxiway A in both directions, which makes turnoffs from landed aircraft on M & MB potentially problematic as these AI wait for departing traffic. So...you get improved traffic flow that more closely matches real world operations (watch video here:
).
I've attached the modified AFCAD for your convenience, but beware: I've also modified some of the parking assignments at the International Arrivals Terminal.
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M