Upon becoming West Air in 1979, the West Air Group also bought Redding, California, Redding-based Golden Eagle Airlines, thereafter West Air began to operate that carriers former Cessna 402s. WestAir had three different call signs over the years, first was "Wescom". This lasted until the operation was briefly expanded to the eastern US, where Air Wisconsin used the call sign "Wisconsin" and was frequently confused with "Wescom". This forced a call sign change to "Shasta", but that only lasted a short period of time because it was frequently confused with "Cessna". Finally, "Sundance" became the call sign until going out of business. They did however change the IATA code from VB to OE during the latter part of the 1980s. The SDU ICAO code was retained throughout their history. Westair had hoped to acquire several Regional Jets, although no particular model had been specifically selected until 1987, when it placed an order for several of them to be delivered starting in 1988. Westair became part of the Mesa Air Group in May 1992. Shortly afterwards, Westair's handful of jet aircraft, British Aerospace Bae-146s, were disposed of in an attempt to dig the airline out of an economic hole. However, United Airlines canceled its United Express contract with the carrier, and in 1998 SkyWest Airlines replaced Westair as United's West Coast Regional Carrier.