New Zealand can handle diversions caused by fog. Maybe we should ask them how to do it.
By having comparitively stuff all traffic to handle!
But for the heavies, if AKL is closed, you go to CHC and v.v.. Ohakea is not an option for anyone except NZ or a genuine emergency. NZCAA got everyone to update their AOC expositions last year to state that we won't use OHA. This stemmed from an incident last year where several airlines that route over Australia failed to stop enroute when they knew CHC and AKL were closed and carried on anyway.
CAT-III is being introduced at NZAA 23L and should be fully up by May next year, although I noticed RVR being reported when it was foggy the other day. That's new!
AKL's CAT-III is well overdue given the lack of alternates available but I suppose in Australia they think there are plenty of options for a heavy and SYD/BNE/MEL are unlikely to be all fogged in at once. Although it could happen, so I'd definitely support a CAT-III of some description for YSSY 16R.
