The NTSB investigation into last week’s midair collision on the Potomac River will include examining the wreckage of the American Airlines plane crews spent days recovering.As of Thursday afternoon, crews completed the removal of all major components of the American Airlines regional jet and U.

The National Transportation Safety Board said on Saturday that the pilot of the American Airlines plane that collided with a Black Hawk helicopter earlier this week may have witnessed the incoming danger and tried to move the plane upward to avoid the crash.