An American Airlines plane and a U.S. Army helicopter collided near Reagan National Airport and crashed into the Potomac River, according to officials.

The American Airlines flight was carrying 64 people when it collided with a Black Hawk helicopter near Reagan National Airport.

Get all the news you need in your inbox each morning. Federal aviation investigators vowed earlier in the day that they will find the cause of a horrific collision. NTSB Chairwoman Jennifer Homendy said at a briefing that the agency wants to assure the American public it will "leave no stone unturned in this investigation .

The Army helicopter and regional American Airlines jet that collided over Washington are both workhorse aircraft that operate around the world on a daily basis.

The American Airlines flight was carrying 64 people when it collided with a Black Hawk helicopter near Reagan National Airport.

The American Airlines flight was carrying 64 people when it collided with a Black Hawk helicopter near Reagan National Airport.

A massive search operation is underway after a passenger aircraft carrying 64 people collided midair with a US Army Black Hawk helicopter near Reagan National Airport outside of Washington, DC, according to aviation and defense officials.

None are believed to have survived the Wednesday night collision, which caused both aircraft to plunge into the frigid Potomac River.

Officials this morning say there are no survivors after a plane crash in Washington. The plane involved has ties to Ohio. What we know.

Potomac River after an American Airlines flight collided in mid-air with a Black Hawk helicopter in Washington DC, with both crashing in the Potomac RiverAbout 300 first responders were working on the rescue operation.

Here are images of the two aircraft involved in the crash, taken from airline websites and directly manufacturers.