An AirCare medical helicopter ... of the crash, which involved an initial fire plume and a second explosion minutes later. According to NTSB member Todd Inman, the AirCare dropped off a patient ...

Investigators are still in the early stages of determining why the jetliner and helicopter ... years before the crash, and collision alarms had been ordering pilots to take evasive action at ...

The crash investigation ... when the collision happened. If a helicopter does need to use that route for an urgent reason, no planes will be allowed to take off or land. That should ensure that ...

The chair of the National Transportation Safety Board, which is investigating the crash ... technology turned off. “If today another accident occurs over DCA with another helicopter that ...

It will likely take more than a year to complete the final report. Investigators previously said the helicopter may have had inaccurate altitude readings in the moments before the crash ...