A flight trainer adjusts the fuel filling pipe as he and workers fill a Eurocopter EC120B helicopter before a flying demonstration for the media outside an "airplane supermarket" by the Beijing International United Flight Club, on the outskirts of Beijing, April 2, 2013. Described as Beijing's first aircraft trading center, the "airplane supermarket" opened on March 30, 2013 and is run by the Beijing International United Flight Club, who have been in the private aircraft business for 26 years. According to the club manager Zhang Changyi, they have sold over 800 aircrafts to club members at prices ranging from 0.3 million yuan ($48,390) to 50 million yuan ($8 million). The trading center is their first attempt at opening the market to public buyers. REUTERS/Jason Lee (CHINA - Tags: BUSINESS SOCIETY TRANSPORT)