Pilot21 From Ireland, joined Oct 1999, 1394 posts, RR: 2
Reply 1, posted (14 years 11 months 2 weeks 13 hours ago) and read 10577 times:
I guess your talking about, 'off blocks time' this is the time that the chocks are removed from the aircraft and it starts to push back from the gate. This is called into the control centre by the aircraft dispatcher, and is used to say whether the flight left on time or not. The fact that it spent the next 30 minutes sitting on the taxi way is immaterial to the dispatcher.
As for wheels up time, never heard it been recorded, although all these sort of things are now recorded by the onboard computer so it may be noted by the airlines.
ABX MX From , joined Dec 1969, posts, RR:
Reply 2, posted (14 years 11 months 2 weeks ago) and read 10571 times:
release time is the time air traffic control gives to an aircraft that has filed an IFR flight plan. the aircraft has 30 mins. from this time to become airborne, or they have to refile. this is to maintain sequencing between similar flight plans. wheels up time is exactly that