Many of the passengers' families have been huddled in a Beijing hotel where they have publicly complained about the lack of progress in finding the plane and accused the Malaysian government of withholding information and botching the investigation.
Lawyers have arrived at the hotel seeking to represent families in lawsuits against various stakeholders in the plane's disappearance, including U.S. company Boeing.
239 people were on board the flight, including 227 passengers (including one infant and one toddler) and 12 crew members.
Three Americans, including two children, are among the missing. Philip Wood, 50, an IBM executive, had just come from Texas where he was visiting family on his way to Beijing.
A total of 14 nationalities, though 152 passengers were Chinese.
Twenty passengers on the plane worked for the Austin, Texas, company Freescale Semiconductor. Another passenger, Chng Mei Ling, worked as an engineer for the Pennsylvania company Flexsys America LP.
Pilot Zahari Ahmad Shah, 53, was a veteran pilot who joined Malaysia Airlines in 1981 and had over 18,000 flying hours.