Do we know for a fact that it is the airlines who own the de-icing rigs? I thought BAA was claiming it had invested £3m in new kit…?
Also, how do the smaller airlines and those with only a few rotations per week provision for de-icing?
ZRH is prone to snow, so we should expect it to be able to justify the investment in the right kit for the three or so months when snow is the order of the day – it also gives the operatives much greater experience of operating the equipment to maximise effectiveness and efficiency.
In contrast, this has been exceptional weather at LHR – there have been several years without any snow or ice issues.