An American Airlines jet carrying 64 people collided Wednesday with a helicopter near Reagan Washington National Airport, ...
Nearly 70 people are believed to have died in the crash, which happened when an American Airlines regional jet collided with a Black Hawk Army helicopter.
The Post spoke to several aviation experts about a number of factors that may have contributed to the fatal collision.
Experts say the deadly incident poses grave questions about how a collision was able to happen over the US capital.