Over three days of sometimes contentious hearings this week, the National Transportation Safety Board interrogated Federal Aviation Administration and Army officials about a list of things that went wrong and contributed to a Black Hawk helicopter and a passenger jet colliding over Washington,

Tuesday was day two of a three-day hearing on the deadly plane crash at Reagan Airport that took the lives of 67 people in January.

Investigators have found that a helicopter involved in a deadly crash with a passenger plane over Washington was flying above its height limit. The helicopter's altitude-measuring instrument was also inaccurate.