Originally Posted by
underfire
Back to the timing, it was very interesting to see how much time some ac took from clearance to roll.
Some people do...and some types are worse than others, but I don't think it's helped by the procedures used.
For instance, tower won't give a conditional line up clearance. When I queried that via my company, the response was 'because of the stop bars'. Well, they exist in other places, and ATC there gives the clearance, and you move as soon as the bars go out. There's probably 15-20 seconds in that.
Even simple things, like giving a heads up that you'll be next will help. That will allow me to spool the engines up a couple of percent, which then shaves a few more seconds (the 380 spool up is very slow from ground idle).