Cat IIIB system has been operating at NZAA for about a month now. It has been used for lo vis landings on three or four mornings in that time and has already proven it's worth. It's great.
Decision height is 50 feet and min RVR 210 metres (going from memory here so stand to be corrected). There are some interesting ground procedures associated with lo vis operations to ensure that the signal isn't corrupted or distorted by aircraft on the ground.
At a personal level, I met NZ38 from LHR/HKG last Sunday and if it hadn't been for the Cat III, it and a number of other flights would have been diverted to NZCH.
Last edited by David Ramsay; 6th June 2008 at 10:47 AM.
Reason: Edited to fix typo
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