flightaware.com/live/flight/COA456 is currently holding due to a line of T’storms affecting KBWI.
Progress time is steadily ticking down, but the distance to the airport is not based on the hold.
Is the arrival time based on air miles travelled minus total miles?
If so, then in the above flight, seems that 171 miles won’t be covered in 6 minutes?
Seems that the distance from the airport divided by speed should compute to the ETA inspite of the hold?
Of course, no one knows how long the hold would take place, but the 6 minutes remaining would not occur based on the above information.
EDIT - Looks like a bug in the ETA now, since now it shows arrived 17 minutes ago, and yet it’s still holding.