Question: The airline that now operates to Wanganui airport with a Saab 340A and a Metroliner III was established in which year ?
Sentence (from "Whanganui Airport"): Whanganui Airport (named Wanganui Airport until 2016) is the airport that serves Whanganui, New Zealand (IATA: WAG, ICAO: NZWU) .
Relevant evidence: No