Question: The airline that now operates to Wanganui airport with a Saab 340A and a Metroliner III was established in which year ?

Context paragraphs:
Saab 340 AEW&amp;C: The Saab 340 AEW&C is a Swedish airborne early warning and control (AEW&C) aircraft; a variant of the Saab 340 aircraft is designated S 100B Argus by the Swedish Air Force.

Whanganui Airport: Whanganui Airport (named Wanganui Airport until 2016) is the airport that serves Whanganui, New Zealand (IATA: WAG, ICAO: NZWU) .  It is located to the south of Whanganui River, approximately 4km from the centre of Whanganui.  The airport was opened in 1954, and services to the airport began in November that year.  In September 2013, Air New Zealand announced that it would withdraw services from Whanganui to Wellington and Taupo in December 2013.  Sounds Air briefly took over the Wellington route, however this was later terminated on 15 May 2015.  The airport has a single terminal with just two gates.  Air Chathams now operates to Wanganui with a Saab 340A and a Metroliner III.

Air Chathams: Air Chathams Limited is an airline based in Te One, the Chatham Islands, New Zealand.  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.  Its main base is Chatham Islands / Tuuta Airport.

SkyTaxi (airline): SkyTaxi Sp.  z o.o. is a charter airline based in Wrocław, Poland.  They operate cargo and passenger charter flights throughout the European Union, Middle-East and North Africa using its two Saab 340A aircraft, one is all white (SP-MRB) while the other in the yellow and white livery of its previous operator LagunAir (SP-MRC).  On 25.10 SkyTaxi took delivery of their third SF4 (SP-MRE), a late production Saab 340A that formerly operated for Estonian Air Regional and is in the blue livery of its previous operator without titles.

Birmingham European Airways: Birmingham European Airways was originally established in 1983 (as Birmingham Executive Airways).  The airline as its name implies was based at Birmingham International Airport (BHX/EGBB) in the UK and operated services geared towards business travellers.  The airline began operations on 6 June 1983 with three Jetstream 31 aircraft, flying services from Birmingham to Copenhagen, Zurich and Milan.  A Saab 340 was introduced in February 1985, but it suffered severe reliability problems in the airline's service, and was retired at the end of the year.  To replace the Saab, Birmingham Executive chose the Gulfstream I, operating a wet-leased aircraft from September 1986, with the airline receiving the first of its own Gulfstreams, fitted out as 24-seat airliners in February 1987.  Birmingham European Airways later introduced a number of BAC 1-11 aircraft into its fleet.

Pociūnai Airport: Pociūnai Airport (ICAO: EYPR) , also known as Prienai Airport or Prienai Pociūnai Airport, is an aerodrome and a small airport located in Ašminta elderate of Kaunas district municipality, Lithuania; 38 km south of the Kaunas centre.  The airport's infrastructure allows it to handle medium and small sized aircraft, like the Saab 2000, Saab 340 as well as other aircraft.

Teddy Air: Teddy Air AS was a regional airline, based at Skien Airport, Geiteryggen, in Norway.  Operating between 1989 and 2004, the company operated Britten-Norman Islander, Embraer 110 and Saab 340 aircraft.  The company started by providing a scheduled service between Skien and Oslo in 1990, followed by services to Stavanger in 1993 and Bergen in 1994.  In 1996, it won a contract with the Ministry of Transport from Oslo to Fagernes.  It was involved in intense competition with other regional airlines, notably Coast Air and Guard Air, following the deregulation of the aviation market.  It also had a single international service to Gothenburg, and from 1999 it served Stord Airport, Sørstokken.  From 1999, the company was transformed to a virtual airline, which wet leased aircraft from Golden Air.  The company ceased operations in 2004.

ABC Air Hungary: ABC Air Hungary Ltd. (Hungarian: ABC Air Hungary Kft.  ) is a cargo airline based at Budapest, Hungary.  Its head office is located in Terminal 1 of Budapest Ferenc Liszt International Airport.  Founded in 1998, the company operated daily cargo flights with LET-410-UVP-E, SAAB 340A, ATR-42, Airbus 300 and Boeing 737-300.  The aircraft fleet consisted of three Let L-410 Turbolet in May 2010.  It had also two SAAB 340A cargo variants.  2001 – the first long term contract with DHL.  2003 – extension of the business with operation for TNT and UPS.  Cargo charter flights for the biggest courier companies – DHL, UPS, FEDEX and TNT, based on direct contracts, or in co-operation with Bridges Worldwide.ABC operated also ad-hock charter flights.

Saab 340: The Saab 340 is a Swedish twin-engine turboprop aircraft designed and initially produced by a partnership between Saab AB and Fairchild Aircraft in a 65:35 ratio.  Under the initial arrangement, Saab constructed the all-aluminium fuselage and vertical stabilizer along with final assembly of the aircraft in Linköping, Sweden, while Fairchild was responsible for the wings, empennage, and wing-mounted nacelles for the two turboprop engines.  After Fairchild ceased this work, production of these components was transferred to Sweden.

Vildanden (airline): Vildanden AS ("The Wild Duck") was a virtual, regional airline based at Skien Airport, Geiteryggen in Norway, where it was the only airline.  With operations starting in 2005, it flew to Bergen, Trondheim and Stavanger using a Jetstream 32 and an ATR 42, which is wet leased from Danish Air Transport (DAT) and Helitrans.  Previously, the airline has also served Stockholm and Molde, and has also operated Saab 340 aircraft, operated by Coast Air, Air Aurora and Avitrans.  The airline hadbeen in conflict with Coast Air about terminating the wet lease agreement.  The company has had to be bailed out several times, including by the municipality, until it managed to make its first profit in 2009.  It ceased operations and filed for bankruptcy in January 2011.

Supporting paragraphs: Whanganui Airport Air Chathams
Answer: 1984