Originally Posted by
andymartin
How does that answer the question?!
Because Dave was explaining that a flight that’s shown on FR24 as 20 minutes late probably left the gate ontime or early according to the schedule.
Just picking a random example, BA219 LHR-DEN today is shown as 1225 scheduled departure, 1243 acutal on FR24.
But the scheduled departure time is the time the aircraft is expected to leave the gate, whereas FR24 is showing the airborne time. The actual departure time according to BA.com was 1218.
So you see the discrepancy. A flight scheduled to leave at 1225 leaves 7 minutes early at 1218, but is misreported by FR24 as leaving 18 minutes late.
And the same thing applies to arrivals in reverse. FR24 shows landing time not arrival at the gate. I was recently on a BA flight that landed 20 minutes early but due to delays on the ground finally arrived on stand 10 minutes late. So the actual arrival was delayed by 10 minutes, whereas FR24 would wrongly report it as 20 minutes early.