Somewhat unclear wether it is the location where one exit the airport building or where the plane is parked. I'd vote one for each, somehow, at least for bus gates. We also need some way of indicating what kind of gate it is; either a skyway, walk-over-the-tarmac (or whatever its called) or bus gate.
On some airports, the large sign with the gate number also have coordinates printed on them. That will be the plane parking and not the exit from the building and should definitiveley be recorded. --Gorm 23:33, 25 October 2011 (BST)