Excusive: U.S. Air plans antitrust filing to boost AMR bid -sources

NEW YORK (Reuters) - U.S. Airways Group aims to file paperwork with U.S. antitrust regulators as early as July for a proposed merger with AMR Corp , the bankrupt parent of American Airlines, according to people familiar with the matter. US Airways believes securing regulatory approval for its proposed deal would remove one key element of uncertainty from the picture, bolstering its case as AMR's creditors compare the merits of a merger with the carrier's standalone restructuring plan, the people said. ...