The National Transportation Safety Board fact-finding hearing on January's midair collision at Ronald Reagan Washington National Airport.
Mandatory Credit:	Rod Lamkey/AP via CNN Newsource
Dateline:	Washington, DC

The National Transportation Safety Board fact-finding hearing on January's midair collision at Ronald Reagan Washington National Airport.
Mandatory Credit: Rod Lamkey/AP via CNN Newsource
Dateline: Washington, DC

Stories this photo appears in:

Tease photo

NTSB hearing reveals air traffic controllers should have warned passenger plane about helicopter before collision, but didn’t

The National Transportation Safety Board questioned witnesses Thursday about air traffic control training, a key part of the investigation into January’s deadly midair collision at Ronald Reagan Washington National Airport. It was the second of three days of investigative hearings into what happened in the accident that killed 67 people.