 Multiple flight cancellations are listed on an American Airlines arrivals monitor at Dallas/Fort Worth International Airport in Grapevine, Texas, Thursday, April 10, 2008.   American Airlines had canceled nearly 2,500 flights this week as of Thursday due to the safety inspections of its MD-80 aircraft following an FAA warning, and said an unspecified number of additional cancellations were expected through Saturday. (AP Photo/David Pellerin)
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