Hi,

On Tuesday 17 November 2009 11:08:57 pm Alex Romosan wrote:
> Gijs de Rooy <gijsr...@hotmail.com> writes:
> > What I see on your pictures and know from my own encounters with such
> > aircraft is that they do not fly, as in "flying an airplane". They
> > just hover above the ground.
>
> if that's the case (and it seems to be because i looked and the airplane
> velocities and they were all 0) then it would make sense to draw the
> airplane only 30 mins before the scheduled departure date since it will
> eliminate all these conflicts (as i tried to do in my patch).
> unfortunately i still haven't seen any of those planes take off.
>

First of all, I'm sorry for not responding any sooner. I'd wished to reply a 
little earlier, but the busy days ain't over yet. ...

Indeed what you are observing here is indeed not a result of the multiple call 
signs, but a result of the new elevation calculation code. Parked aircraft are 
typically placed at unique locations, however, whenever an airport doesn't 
have sufficient parking space left, the remaining aircraft will be placed at a 
default location (currently, the airport's center point). This used to work 
resonably well, but now that AI aircraft are also included in the elevation 
calculations, each time an aircraft checks for the current ground elevation, 
it gets placed on top of highest one above. Because ground elevation checks 
are done intermittently, each aircraft is placed on top of the others in a 
semi random way, leading to the "olleke bolleke" staggered climbing that Gijs 
referred to. 

Since all these aircraft at US airports currently only have one destination 
(EHAM), your best chances of seeing them move would be late afternoon, early 
evening. Because there's only one destination, there's also only one (or a 
very limited number) of departure(s) every day.


Cheers,
Durk

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