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
Airport city other food services; specialty retail and factory outlet centres; cultural and entertainment attractions; hotels; banks and currency exchanges; business offices and complexes; convention and exhibition centres; leisure, recreation and fitness venues; logistics and distribution; perishables and cold storage; and free trade zones and customs-free zones. Airport cities may be found in varying stages of development surrounding major airports worldwide, particularly in Europe, where older airports are being redeveloped or expanded on large tracts of unused airport land. Many new airports in Asia are being planned as airport cities or aerotropolises. North America, South America, and Africa all boast airport city