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Slot usage requirement

At all Level 3 airports, slots are subject to a "use-or-lose" provision, requiring a carrier to use allocated slots at least 80 percent of the time. The applicable rule for DCA is codified at 14 CFR § 93.227 (PDF) and the applicable usage rules for JFK and LGA can be found in the FAA Orders limiting operations at these airports.

The FAA may grant a waiver of the usage requirement at DCA as provided in § 93.227(j). The FAA may also grant a waiver of the usage requirement as provided in the FAA Orders limiting operations at JFK and LGA.

Schedule submissions

At JFK, the failure to submit a schedule by the prescribed deadlines consistent with the WSG could result in the loss of a carrier's historic slots.

Carriers that provide initial or revised submissions at Level 2 or Level 3 airports after the announced deadline may receive a lower priority.