Controllers lost contact on May 1 because a temporary control tower antenna had not been set up at the correct location, Brig. Gen. Matthew Braman told AP.
The CH-53 Super Stallion crashed Feb. 6, 2024, during a night flight when it hit a mountain near Pine Valley, California, killing all five Marines aboard.
The National Transportation and Safety Board is recommending helicopters no longer fly along the route when planes are landing on specific runways at DCA.