A key safety system was turned off on the U.S. Army helicopter that collided with an American Airlines regional jet last week near Washington's Reagan Airport, killing 67.

The Army Black Hawk helicopter that collided with an American Airlines commuter plane near Reagan Washington National Airport in Virginia Wednesday was on a “training flight” when they crashed into the Potomac River, according to the military service branch.

A regional jet carrying 64 people collided with an Army Black Hawk helicopter. Reagan National Airport grounded all flights.

U.S. Figure Skating confirms "several members of our skating community" were on the flight: "We are devastated by this unspeakable tragedy."

Authorities continue to search for bodies and determine what led to the Wednesday, Jan. 29, midair collision between an American Airlines jet and a U.S. Army Black Hawk helicopter over the Potomac River in the Washington,

The Army helicopter that collided with a passenger jet last week in Washington had its tracking technology turned off at the time of the crash, U.S. Senator Ted Cruz told the New York Times.

In the deadliest U.S. major commercial aviation incident in 16 years, there were no survivors in a collision between a commercial aircraft and an Army helicopter by Ronald Reagan National Airport near Washington D.