The trials mark the first time one of the new GE Aerospace T901 Improved Turbine Engines has been powered up inside a Sikorsky UH-60 Black Hawk as part of a US Army plan to overhaul its fleet of the iconic utility helicopters.

Multiple fatalities have been reported after a horrific incident involving American Airlines flight 5342 and a U.S. Army UH-60 Black Hawk helicopter over

The UH-60 Black Hawk is the helicopter involved in a crash with a passenger jet on Wednesday night near Reagan National Airport in Washington, D.C.

Defense Secretary Pete Hegseth calls the deadly aircraft collision involving a Black Hawk and a civilian airliner "a tragedy" in a statement obtained exclusively by Fox News.

A Black Hawk helicopter can transport up to "12 fully equipped, seated troops in combat," according to Lockheed Martin, the weapons company that builds the helicopter. There are about 5,000 of these helicopters in use by the United States Military.

A tragic collision between a Sikorsky UH-60 Black Hawk helicopter and an American Airlines jet near Washington DC has shocked almost everyone.

An Army Black Hawk helicopter collided with a regional jet near Ronald Reagan Washington National Airport on Wednesday evening, U.S. officials confirmed to ABC News.

A passenger plane carrying 64 people has collided midair with a military helicopter while landing at Ronald Reagan National Airport near Washington, DC. The PSA Airlines Bombardier CRJ700 jet collided with a Sikorsky UH-60 Black Hawk helicopter at around 9pm on Wednesday (02:00 GMT Thursday), the Federal Aviation Administration (FAA) said.

More victims have been named following the mid-air collision between an American Airlines passenger jet and a military helicopter. Details are also emerging of the events around the crash - including that an air traffic controller was allowed to leave their shift early that night.

Black boxes have been recovered from the crashed American Airlines plane, with tests being carried out in a laboratory. Meanwhile, air traffic control audio has revealed another flight at the same airport the day before used an emergency code due to helicopter traffic in the area.

An NTSB-led investigation is in full swing to identify factors that led to the Jan. 29 midair collision between an American Eagle Bombardier CRJ-700 operated by PSA Airlines on approach to Ronald Reagan Washington National Airport (DCA) and a U.S. Army Sikorsky UH-60L Black Hawk helicopter.