Will missing jet prompt change in aviation system?
In this March 13, 2014 file photo, university students hold a candlelight vigil for passengers on the missing Malaysia Airlines Flight MH370 in Yangzhou, in eastern China's Jiangsu province. The disappearance of Malaysia Airlines Flight 370 has exposed wide gaps in how the world's airlines, and their regulators, operate. But experts warn this isn’t likely to be one of those defining moments that lead to fundamental changes. (AP Photo/File) CHINA OUT