American Cancels Nearly 600 Friday Flights

The reader board at Portland International Airport shows cancelled American Airlines flights in Portland, Ore., Wednesday, April 9, 2008. American Airlines canceled more than 1,000 flights Wednesday, more than one-third of its schedule, as it spent a second straight day inspecting the wiring on some of its jets _ the same issue that caused it to scrub hundreds of flights two weeks ago. (AP Photo/Don Ryan)
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Atlanta (AP) It's a rough day for the airline industry. American Airlines has grounded hundreds more flights today to conduct safety inspections of its md-80 aircraft.

American today announced the latest cancellations and that it expected to operate about half of its MD-80 schedule through much of the day.

The company's chief executive has said this week's flight cancellations will cost American Airlines tens of millions of dollars but the carrier can withstand the losses.

Meanwhile, Frontier Airlines is seeking bankruptcy protection. it's the fourth carrier to do so in the past several weeks.