Mechanics taxi the Empress of Buenos Aires to the gate for an early morning departure. An open cowling on number 4 engine shows their work not quite finished.

Empress flight departing for Vancouver. This one is carrying an extra Rolls-Royce Conway engine in the 5th pod (inboard of Number 2 engine).

Aviation trivia - What was the first supersonic airliner? This one! CF-CPG went supersonic on August 21, 1961, eight years before the Tu-144 or the Concorde. With a Douglas flight crew and temporary test registration N9604Z, the DC-8 reached Mach 1.012 in a shallow dive from 52,000 ft (also a record at the time). Delivery to Canadian Pacific followed on November 15th. Retired March 1980 and despite efforts by CP Air employees to save the historic aircraft, it was sold and broken up for parts in Opa Locka, FL.

The viewing area at Toronto gave an unusually high viewpoint for photography

Rolls-Royce Conway-powered CF-CPG was still in service when Canadian Pacific became CP Air.

Canadian Pacific flew to Sydney only once a fortnight (two weeks) at the time the photo was taken. DC-8s had not long replaced Britannias on the route, the switch coming with the opening of the new Mangere Airport at Auckland, New Zealand in November 1965.