51.   United says mechanics are sidelining aircraft for unnecessary repairs and refusing to work overtime shifts agreed to previously.

52.   United has said flights will be grounded if the mechanics walk off the job.

53.   United has said it backed off from the merger because it believed federal regulators were opposed.

54.   United has said it will review the one-year ban as it expires next year.

55.   United said it had identified all passengers and crew and was notifying families.

56.   United said it was hit hard by the drop-off in business travel as well as higher labor and fuel costs.

57.   United said Sunday that one passenger had purchased two tickets, reducing the number it previously said was on board.

58.   United said in a statement it received substantial discounts from both manufacturers.