41.  The U.S. National Transportation Safety Board is investigating the cause of the accident, the United spokesman said.

42.  Thirteen people, including one crew member, remained hospitalized, as of Tuesday morning, said Hideki Iseyama, a United spokesman in Tokyo.

43.  Thirteen passengers and two flight attendants were treated at area hospitals and released, United spokesman Joe Hopkins said.

44.  Twelve people remained hospitalized, as of early Wednesday, United spokesman Takaaki Nakajima said.

45.  Twelve people, including one crew member, remained hospitalized as of late Tuesday, said a United spokesman in Tokyo.

46.  United Airlines spokesman Andy Plews declined to comment when reached late Sunday by The Associated Press.

47.  United Airlines spokesman in Tokyo Kai Takamasa said he had no information on the matter and no comment.

48.  United spokesman Alan Wayne said the airline was looking into the cause of the pressure drop.

49.  United spokesman Joe Hopkins confirmed the latest talks but would not characterize them.

50.  United spokesman Joe Hopkins said the Elkgrove Village, Ill.-based airline is prepared to address any antitrust issues raised by the proposed acquisition.