Berlin Tegel Airport additional aircraft stands were constructed and the building was expanded by approximately 50% of its original size, in order to handle another 1.5 million passengers per year. The extended terminal now houses a transit zone for connecting passengers which does not exist at any other terminal at Tegel Airport. Due to noise protection treaties, the overall number of aircraft stands at the airport is restricted, thus aircraft stands on the apron (serving Terminals A and D) had to be removed for compensation. Terminal C is able to handle widebody-aircraft like formerly Air Berlin's Airbus A330-200s up to the size of
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