Shandong Airlines Co,.Ltd. (Chinese: 山东航空; pinyin: Shāndōng Háng Kōng, nicknamed SDA or 山航 Shānháng) is an airline based in the Shandong Airlines Center (山东航空大厦 Shāndōng Hángkōng Dàshà) in Jinan, Shandong, China. The Chinese carrier operates mainly domestic trunk routes from Jinan, Qingdao and Yantai to major cities in China. It is owned by Air China and holds a 10 percent stake in Sichuan Airlines. Shandong Airlines was established on 12 March 1994 and started operations in September of the same year. In September 1997, it jointly founded the Xinxing Aviation Alliance along with five of China's provincial airlines. 21 April 2014,Shandong Airlines commitment to order 50 Boeing 737s, including 16 Next-Generation 737s and 34 737 MAXs,the order still needs to be approved by the Chinese government and will receive the aircraft in batches between 2016 and 2020.
The 737-800 is a stretched version of the 737-700, and supersedes the 737-400. It also filled the gap left by the decision to discontinue the McDonnell Douglas MD-80 and MD-90 following Boeing's merger with McDonnell Douglas. The -800 was launched by Hapag-Lloyd Flug (now TUIfly) in 1994 and entered service in 1998. The 737-800 seats 162 passengers in a typical two-class layout, or up to 189 in one class. It competes with the A320. For many airlines in the U.S., the 737-800 replaced aging Boeing 727-200 trijets and MD-80 series and MD-90 aircraft.