Pacific Western Airlines of Vancouver, BC imported Grumman G-21A Goose, CF-UMG, from Alaska in August 1966. It had previously flown with the US Dept of Interior's Bureau of Land Management in Alaska as N643 and with Fleet Air Transport in 1963-1964 as N643H. In August 1968, PWA sold CF-UMG to Trans-Provincial Airlines (TPA) which had a landline base in Terrace and a seaplane base at Seal Cove in Prince Rupert. The airline's main business was servicing coastal communities and logging camps on the northern BC coast. TPA was acquired by Jim Pattison Ind. c1980 for Air BC, but remained separate.