The airline that now operates to Wanganui airport with a Saab 340A and a Metroliner III was established in which year ?
Whanganui Airport:  Air Chathams now operates to Wanganui with a Saab 340A and a Metroliner III. Air Chathams:  It was established in 1984 and operates scheduled passenger services between the Chatham Islands and mainland New Zealand along with routes between Auckland and Whakatane, and Auckland and Whanganui.
1984