A horrifying video showing the moment a US Army Black Hawk helicopter smashed into a passenger jet over Washington, DC, has been released, as investigators reveal the final words of the doomed crew.
The footage, captured by CCTV and played at the start of a three-day National Transportation Safety Board (NTSB) hearing, shows a bright flash lighting up the night sky above the Potomac River.
Seconds earlier, the military chopper had collided with American Airlines Flight 5342 as it descended into Reagan National Airport.
The Bombardier CRJ700 had been flying from Wichita, Kansas, on January 29 and was just minutes from landing when it was hit.
All 67 people on board the two aircraft were killed, including 64 passengers and crew on the jet and three helicopter crew members, marking the deadliest US airline crash in more than two decades.
