The National Transportation Safety Board says it has recovered a cockpit voice recorder and flight data recorder from the American Airlines plane that collided with an Army Black Hawk helicopter near Reagan National Airport late Wednesday.

PMAir traffic controller working at time of crash interviewed by NTSB investigatorsThe DCA air traffic controller who was working at the time of the collision has been interviewed, NTSB member Todd Inman said during the briefing.

Sixty-seven people are believed to have died after a passenger plane hit a military helicopter in mid-air near Washington DC's Ronald Reagan airport on Wednesday evening.