WASHINGTON, April 15 (Reuters) - The U.S. State

Department has approved the potential sale of aircraft

contractor logistics support and training to Iraq for an

estimated cost of $140 million, the Pentagon said on Monday.

The training and support apply to Iraq's C-172 and AC/RC-208

aircraft fleet, the Pentagon said in a statement. The principal

contractor will be Northrop Grumman Corporation ( NOC ), it added.