|Quoting contrails67 (Thread starter):|
1. When airlines post their departure and arrival time, I assume that to make themselves look good, the departure time is the moment they left the gate and the arrival time is the moment the wheels touch down on the runway at the destination. Can someone verify?
Typically it is from parking brake release to parking brake set. It doesn’t always work that way, but that is usually how the flight duration is set and is what airlines publish as arrival and departure times if they publish actual times on their website.
The purpose of padding schedules goes beyond just looking good in the Arrival 14 stats. Airlines typically monitor Arrival within 14 minutes, Departure at 0, Departure within 15, Departure within 120, Departure over 120 and Cancellations. All the numbers are used in different areas. For example delays under 15 are typically because of airport operations loading the passengers, short turnaround times, maintenance deferrals, cargo loading, etc. Delays over 120 minutes are for serious mechanical problems that take time to repair and can’t be deferred (Fuel, Flight Controls, Engines, etc).
Padding the schedules helps the airline prevent passenger misconnects. However it can result in airplanes with longer block time due to gate availability, and lower utilization. Every airline is different. Also departures at certain times of the day are padded more for anticipated airport delays. For example on JFK
, block times range from 5:50 to 6:15 depending on airline and time of day.
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