The U.S. Army helicopter that collided with an passenger jet near Washington, D.C., had an advanced surveillance system turned off.

On Friday, investigators said the helicopter may have had inaccurate altitude readings in the moments before the crash, and the crew may not have heard key instructions from air traffic controllers.

LOUIS — While being pursued by a police helicopter and St. Louis police ... and he had an active warrant from the U.S. Marshals. When SLMPD officers searched him and his vehicle, they found ...

"They still want answers, and we want to give them answers." Helicopter was training to evacuate US leaders in event of attack The Black Hawk helicopter was on a training flight for a military ...

Under a licencing arrangement between Aérospatiale and HAL, the Alouette III were built by HAL in India. Designated HAL ...

The three people on board were transported to the hospital for further treatment, the fire marshal's office said. "Please join us in extending thoughts and prayers for the helicopter crew ...

(CNN) — The US Marshals Service has deputized members of Elon Musk’s private security detail, giving them certain rights and protections of federal law enforcement agents, three law ...