Source: Hugo Martín, Los Angeles Times

After sitting out a recent series of airline mergers, Tempe, Ariz.-based US Airways Group Inc. wants to hook up with American Airlines. But American's parent company, AMR Corp., which is mired in Bankruptcy Court, said it's not interested — at least for now. American, ranked as the nation's fourth-largest airline, operates 617 planes, with an additional 281 jets operated by its regional carrier, American Eagle. US Airways ranks as the country's fifth-largest airline and operates about 340 jets.

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