Air New Zealand Limited is a state owned enterprise. Accordingly, it has statutory obligations that other private companies are not subject to; namely:
It's all well and good posting abstracts of legislation but I am afraid you've missed out a rather key section. If you take note of Schedule 1 and Schedule 2 of the act, you'll will note Air New Zeland is not listed and therefore not bound by the act. Majority government owned, yes. SOE, no.