So this 100nm is covered in around 25 minutes rather the 15 minutes at full cruise.Īt a smallish (and well designed) airport the rollout and taxiing to the stand may only take 5 minutes, plus another 5 to attach the air bridge/stairs and open the door. This gives an average groundspeed of 270kt. Let's take the best case scenario to start with, and assume that the cruise ground speed of the airliner is around 400kts.įor our best case, we also assume that the runway is lined up with the flight path and that the airspace is quiet so the plane is cleared "straight in" with no vectoring for separation or holding patterns.Ī typical descent profile would start 100nm out, during which the plane would slow pretty uniformly from around 400kts to around 140kt.
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