Wearing Air BC's last Twin Otter color scheme, C-GKNR was sold to Ashe Aircraft Enterprises in 1992.

Delivered to Aeronaves de Mexico as XA-BON, West Coast Air Services bought this Twin Otter via a Texas aircraft broker in 1978. Merged into Air BC in 1980, the aircraft was sold to Ashe Aircraft Enterprises in 1992. Fifteen years of leases ended with the sale in USA as N186AL to Express Air in Texas. The aircraft is believed stored with National Aerotech based in Thomaston, GA.

The third of three Twin Otters built for TABA (Transportes Aéreos Buenos Aires S.A.) not delivered due the airline's financial difficulties, it went instead to Aeronaves de Mexico in December 1968. Sold in February 1978 to a broker in the USA, the aircraft entered West Coast Airline's fleet in May. Merged into Air West to form Air BC in 1980, the aircraft was sold to Ashe Aircraft Enterprises in 1992. Many leases followed before it was registered in the USA as N186AL in 1995. The aircraft is the center of a legal dispute and has been stored since 2009.

West Coast Air Services was one of the airlines merged to form Air BC in December 1980. This Twin Otter carried the West Coast color scheme for a while before repainting.