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
Berlin Tegel Airport a Boeing 747-400 but features no jet bridges. Terminal D was opened in 2001 and is a converted car park. It features 22 check-in counters (D70–D91), with one bus-boarding gate and two walk-boarding gates. Most passengers of airlines operating smaller aircraft (like Embraer 190s for example) are brought to the remote aircraft stands by bus from here. Terminal D is the only part of the airport that remains open all night long. The lower level arrival area is called Terminal E (Gates E16-E18). Tegel Airport was originally planned to have a second hexagonal terminal like the main building right next