It was disclosed that the helicopter had turned off its Automatic Dependent Surveillance-Broadcast (ADS-B) system, a sophisticated tracking technology designed to provide real-tim

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.

Air-traffic control radar appears to have measured a US Army helicopter flying at a lower altitude than an American Airlines Group Inc. jet before the two collided near Washington, DC, on Wednesday, National Transportation Safety Board officials said.