This from their website announcing TG-CH.
Leave Tauranga at 7am and arrive in Christchurch at 8.40am. Return from Christchurch at 5.50pm and be home in time for tea with the family.
Our Jetstream 41 aircraft is the fastest turbo-prop aircraft in New Zealand! This combined with our new direct service means Tauranga finally has a true full day of business in Christchurch! Plus, our new service will get you from Tauranga to the South Island ski fields faster than you can say "Where's my boots?"
1.7 TG-CH aint too bad - though that is sched time. Heard that trip is actually 1.4! Air NZ were talking about the 1900 being a 1.9 sched, after trials a few years back.
So what is fastest prop in the 'airline' skies in NZ?