Separate IFR aircraft landing behind an arriving aircraft to the same runway:
Behind super:
(a) Heavy or large - 3 minutes.
(b) Small - 4 minutes.
Behind heavy:
(a) Heavy or large - 2 minutes.
(b) Small - 3 minutes.
Small behind B757 - 3 minutes.
Separate IFR aircraft landing behind an arriving aircraft to a parallel runway separated by less than 2,500 feet, or a crossing runway if projected flight paths will cross:
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