heating of the cockpit's electronics could explain both the cut in the communications and problems with the supply of oxygen to those on board. Questions are being asked about the role of the Civil Aviation Authority, as records indicate that no attempt to contact the plane was made, as is usual, when it entered Greek air space. Controllers tried to contact the plane only when it failed to descend for its approach to land at Athens International Airport. Investigators ruled out a leakage of dangerous gases inside the plane that may have left passengers and crew unconscious or dead, a coroner said Friday. Greek and U.S. aviation experts searching for clues were hoping the latest autopsy tests would shed some light on why several of the 121 people on board, including the co-pilot, were left unconscious.
