Two planes aborted landings at Reagan National Airport in the past week due to military helicopters in their flight path, according to the Washington Post.

In the three years before the deadly collision between an Army helicopter and an American Airlines flight near Reagan ...

ADSBexchange was able to triangulate the flight path of the helicopter using multilateration (MLAT). A FlightRadar24 video describes MLAT as a flight tracking technique that determines aircraft ...

The Army Black Hawk is said to have been flying higher than it should have been when it collided with a passenger jet, killing 67 people. And the air traffic controller on duty was doing a job usually ...