Experts say the deadly incident poses grave questions about how a collision was able to happen over the US capital.

The Post spoke to several aviation experts about a number of factors that may have contributed to the fatal collision.

Why did the Washington DC plane and helicopter crash happen? Everything we know so far about the US air disaster - ...

Those fears materialised Wednesday night when an American Airlines plane collided with a military helicopter, killing 67 ...

There are "no survivors" after an American Airlines jet carrying 64 people collided in mid-air with a military helicopter ...

Here's what you need to know about the history of plane crashes in Mississippi. Here's what the NTSB says about where, when, ...

"I walk here every day. I see helicopters going around. I see planes coming in like crazy. I never thought that would happen.

Trump says he has been briefed on the ‘terrible accident’ between American Airlines jet and Army Black Hawk helicopter ...

President Donald Trump said there were no survivors when an American Airlines flight collided with a Black Hawk by Reagan ...

Officials say no survivors after a passenger jet crashed with an Army helicopter on approach to a Washington, D.C., airport. Here's what we know.

Captain Chesley 'Sully' Sullenberger offered his expert opinion following the collision between an American Airlines plane ...