After Lufthansa took control of Swiss International Air Lines in 2005, traffic began to grow again. On 18 October 2001, Germany and Switzerland signed a treaty regarding the limitation of flights over Germany. Under the terms of this treaty, any incoming aircraft after 22:00 had to approach Zürich from the east to land on runway 28, which, unlike the airport's other runways, was not equipped with an instrument landing system. A month later, at 22:06 on 24 November, an inbound Crossair Avro RJ100 using this approach in conditions of poor visibility crashed into a range of hills near Bassersdorf and exploded, killing 24 of the 33 people on board. The flight had originally been scheduled to land on runway 14 before 22:00, but it was subject to delay and was therefore diverted to runway 28. Zurich Airport completed a major expansion project in 2003, in which it built a new parking garage, a new midfield terminal, and an automated underground people mover to link the midfield terminal to the main terminal. In November 2008 a complete renovation and rebuild of the old terminal B structure was announced. The new terminal B opened in November 2011, and provides segregated access to and from aircraft for Schengen and non-Schengen passengers. Zurich Airport handled 25.5 million passengers in 2014, up 2.5 percent from 2013. Etihad Regional ceased on 18 February 2015 to fly two-thirds of its scheduled routes without further notice, amongst them all its services from Zürich except the domestic service to Geneva. Etihad Regional blamed the failure of its expansion on the behavior of competitors, especially Swiss International Air Lines, as well as the Swiss aviation authorities. Following the demolition of some office buildings the construction of the new baggage sorting facilities between the Operations Center and Terminal 1 began in spring 2018 with a total investment of CHF 500 million. As of 2020, the marketing of all advertising space at the airport was transferred from Clear Channel to APG. The main Terminal 1 will be completely rebuilt - including the tower of the Skyguide Air Traffic Control. Construction is scheduled to begin in 2021, with completion expected in 2030. In addition to the old building fabric, the expected growth in passenger numbers is the main reason for the pending construction work. "The forecasts suggest that the number of passengers arriving, departing or transferring at Zurich Airport each year today will