FILE - This undated file photo provided by Pinnacle Airlines Corp., shows the logo for Pinnacle Airlines Corp., based in Memphis, Tenn. Pinnacle Airlines says it's filed for bankruptcy protection in order to deal with its mounting debt and costs, The Associated Press reports Monday, April 2, 2012. The Memphis, Tenn.-based airline operates regional flights as Delta Connection, United Express and US Airways Express. It says its current business model isn't sustainable. (AP Photo/Pinnacle Airlines Corp. via PRNewsFoto, File)

Associated Press
FILE - This undated file photo provided by Pinnacle Airlines Corp., shows the logo for Pinnacle Airlines Corp., based in Memphis, Tenn. Pinnacle Airlines says it's filed for bankruptcy protection in order to deal with its mounting debt and costs, The Associated Press reports Monday, April 2, 2012. The Memphis, Tenn.-based airline operates regional flights as Delta Connection, United Express and US Airways Express. It says its current business model isn't sustainable. (AP Photo/Pinnacle Airlines Corp. via PRNewsFoto, File)
FILE - This undated file photo provided by Pinnacle Airlines Corp., shows the logo for Pinnacle Airlines Corp., based in Memphis, Tenn. Pinnacle Airlines says it's filed for bankruptcy protection in order to deal with its mounting debt and costs, The Associated Press reports Monday, April 2, 2012. The Memphis, Tenn.-based airline operates regional flights as Delta Connection, United Express and US Airways Express. It says its current business model isn't sustainable. (AP Photo/Pinnacle Airlines Corp. via PRNewsFoto, File)
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