Berlin Tegel Airport used the airport as a diversion airfield before. Initially, all British Airways services from Tegel—with the exception of the daily non-stop service to London Heathrow—continued to be operated by BAC One-Eleven 500s. The daily London–Heathrow non-stop was operated with Hawker Siddeley Trident 2E/3B equipment based at that airport until the end of the 1975 summer season. (It subsequently reverted to a One-Eleven 500 operation.) From 1983, British Airways began updating its Berlin fleet. This entailed phasing out the ageing One-Elevens, which were replaced with new Boeing 737-200 Adv. During the second half of the 1980s, British Airways augmented its Berlin
Billy Bishop Toronto City Airport time, the island airport site was to become the site of the "Harbor City" residential development, although a replacement for the island airport had not been agreed upon. A 1969 proposal to build a new airport by the new headland was met with opposition from local residents and Toronto City Councillors and was dropped. With plans uncertain, the Government of Canada requested that the Harbour Commission continue to operate the airport as is in the interim. In 1972, the "Harbor City" project died when the governments of Canada and Ontario proposed to build a new major airport in Pickering, Ontario.