How many minutes prior to, to how many minutes after an EDCT (Expect Departure Clearance Time) should a/c not depart?

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Multiple Choice

How many minutes prior to, to how many minutes after an EDCT (Expect Departure Clearance Time) should a/c not depart?

EDCT is the estimated departure clearance time used to sequence and regulate departures so the flow into the airspace stays orderly. To keep that flow predictable and give controllers and crews a bit of buffer for taxiing, hold, and minor variances, there’s a five-minute protection around the EDCT. Departing more than five minutes before the EDCT would encroach on the slot that’s not yet ready, and departing within five minutes after the EDCT would push back the subsequent departures and disrupt the planned sequence. So the safe rule is to avoid departures five minutes before and five minutes after the EDCT.

EDCT is the estimated departure clearance time used to sequence and regulate departures so the flow into the airspace stays orderly. To keep that flow predictable and give controllers and crews a bit of buffer for taxiing, hold, and minor variances, there’s a five-minute protection around the EDCT. Departing more than five minutes before the EDCT would encroach on the slot that’s not yet ready, and departing within five minutes after the EDCT would push back the subsequent departures and disrupt the planned sequence. So the safe rule is to avoid departures five minutes before and five minutes after the EDCT.

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