It does indeed seem we will have to 'agree to disagree' as I just cannot even begin to understand why you view this development as unsafe.
At the end of the day if you are p**sed iff that green space is now going to be concrete, then fine, thats an argument in itself (although prime development land next to a growing airport, I must ask did you honestly think it would remain 'green' for long?).
However this whole 'car park danger' in the clear zone to me is making a kountain out of a molehill and blown way out of proportion in reality.