Turkish Airlines is the national flag carrier airline of Turkey, headquartered at the Turkish Airlines General Management Building on the grounds of Atatürk Airport in Yeşilköy, Bakırköy, Istanbul. As of February new, it operates scheduled services to 261 destinations in Europe, Asia, Africa, and the Americas, making it the fourth-largest carrier in the world by number of destinations. With Istanbul Atatürk Airport being the main base, the Turkish carrier has secondary hubs at Esenboğa International Airport, Sabiha Gökçen International Airport, and Adnan Menderes Airport. THY has been a member of the Star Alliance network since 1 April 2008.\r
With an operational fleet of nine cargo aircraft, the airlines cargo division serves 47 destinations.\r
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Ballspielverein Borussia 09 e.V. Dortmund, commonly known as Borussia Dortmund, or BVB, is a German sports club based in Dortmund, North Rhine-Westphalia. The football team is part of a large membership-based sports club with more than 115,000 members, making BVB the third largest sports club by membership in Germany. Dortmund plays in the Bundesliga, the top tier of the German football league system. Dortmund is one of the most successful clubs in German football history.\r
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The Airbus A321 is a stretched first derivative of the standard A320. The variant was launched in 1988, when the A320 began operations. Compared with the A320, the A321s major change is the stretched fuselage, which is lengthened by 6.94 metres (22 ft 9 in); the A321 is the largest of the A320 family. This is achieved by adding a 4.27 m (14 ft 0 in) front plug immediately forward of wing, and a 2.67 m (8 ft 9 in) rear plug. To maintain performance, double-slotted flaps were included, in addition to increasing the wing area by 4 m2 (43 sq ft), to 128 m2 (1,380 sq ft). Other minor modifications were made to accommodate the A321-100s 9,600 kg (21,200 lb) increase in maximum takeoff weight to 83,000 kg (183,000 lb). The maiden flight of the first of two prototypes came on 11 March 1993. The A321-100 entered service in 1994.\r
The basic A321-100 features a reduction in range compared to the A320 as extra fuel tankage was not added to the initial design to compensate for the extra weight. To overcome this Airbus launched the heavier and longer range A321-200 development in 1995 which has a full-passenger transcontinental US range. This is achieved through higher thrust engines (V2533-A5 or CFM56-5B3), minor structural strengthening, and an increase in fuel capacity with the installation of one or two optional 2,990 L (790 US gal) tanks in the rear underfloor hold. The additional fuel tankage increases the total fuel capacity of this model to 30,030 L (7,930 US gal). These modifications also increased the maximum takeoff weight of the A321-200 to 93,000 kg (205,000 lb). This variant first flew in December 1996. Its direct competitors include the Boeing 757-200 and the 737-900/900ER.