US agency to probe FAA oversight of Washington airspace after fatal collision

A U.S. agency will announce Friday it is opening an investigation into the government's management of airspace around Reagan Washington National Airport after a fatal Jan. 29 collision between an American Airlines regional jet and Army helicopter killed 67.

The U.S. Transportation Department Office of Inspector General is auditing the Federal Aviation Administration's management of airspace and its allowance of exemptions of the use of a key safety system by some military aircraft, according to a document seen by Reuters.