Trans World Airlines Inc. said its board...

Trans World Airlines Inc. said its board has approved a sweetened offer from its chairman, Carl C. Icahn, for the shares in the company that he does not already own, removing one barrier in his effort to take the airline private. Icahn controls TWA through entities that own 77% of its 30 million common shares outstanding. He dropped a similar proposal after the October stock market crash, then came back with a revised bid on April 22.