Originally Posted by
cavemanzk
Not uncommon for a a320/321 to make an overnight dash to NAN with a fresh crew. If they know ahead of time that long-haul wide body is going to divert to NAN on its way to AKL. Often that have hours notice of it happening.
Plus they always have spare crew on 24 hour standby to cover events like this (as well as coverage for sickness etc).