Question: What was an American regional airline called when it was founded in 1982, that company acquired a carrier operated a mixed fleet of Beechcraft 1900, Piper Navajo Chieftains, Beech 99 Airliners, and also occasionally utilized a Beech King Air 90 as a back-up aircraft?
Sentence (from "Air 500"): Air 500 had contracts in the courier industry, Air Ambulance Services and Aircraft Management as well as a base of operations at the Esso Avitat in Ottawa where 2 Mitsubishi Marquise MU2 aircraft were stationed.
Relevant evidence: No