The crash seems to have resulted from a series of human errors that cascaded to cause a freak accident. This past week has been catastrophic for air travel and safety. A Bombardier CRJ700 regional jet operated by PSA Airline,

An Army Black Hawk helicopter was flying too high when it crashed into an American Airlines jet near Reagan National Airport in Washington, DC last week, the National Transportation Safety Board confirmed.

The National Transportation Safety Board released an update on Tuesday informing the public that the Black Hawk helicopter that collided with an American Airlines plane in Washington, D.C., last week was flying too high at the time of the crash.