An All Nippon Airways' (ANA) engineer inspects an engine of an ANA Boeing Co. 787 Dreamliner after it underwent a test flight at Haneda airport in Tokyo April 28, 2013. ANA, the Japanese launch customer for Boeing Co's 787, flew its first Dreamliner in more than three months on Sunday to test reinforced batteries installed by the U.S. aircraft maker. It returned without incident, a spokesman for the airline said. REUTERS/Yuya Shino (JAPAN - Tags: TRANSPORT BUSINESS)