3 big takeaways from the NTSB hearing on the DCA midair collision

Members of the National Transportation Safety Board speak before an investigative hearing about the January midair collision between an American Airlines regional jet and a U.S. Army Black Hawk helicopter near Ronald Reagan Washington National Airport.

A three-day National Transportation Safety Board hearing on the deadliest U.S. aviation accident in decades dug into problems with altimeters, chopper routes and the busy Washington, D.C., airspace.

(Image credit: Kayla Bartkowski)