A pilot's theory about the cause of the crash between an American Airlines jet and a military helicopter has quickly gone viral online.

District of Columbia Mayor Muriel Bowser is giving an update on the investigation and recovery effort after an American Airlines passenger jet collided with a military Black Hawk Wednesday evening. All 67 people on both aircraft have been declared dead,

The US president says the army Black Hawk involved in Wednesday's collision was above the 200ft altitude limit for helicopters.

Officials are turning their focus to recovery from rescue. Here's what to know There are not believed to be any survivors from the midair collision of an American Airlines passenger jet and a US Army Black Hawk helicopter,

Washington, DC Mayor Muriel Bowser has confirmed that “both aircraft are in the water” and 64 people were flying in the American Airlines aircraft and three were aboard the military helicopter that collided mid-air.

Late Wednesday evening, an American Airlines regional jet operated by PSA Airlines collided with a U.S Army helicopter and both crashed into the Potomac

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.

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 plane collided with a helicopter just before it was scheduled to land. This is a developing story and will be updated.

Hundreds of emergency responders were searching the waters of the Potomac River, after a passenger plane and a military aircraft collided near Virginia’s Reagan National Airport on9.According to the Federal Aviation Administration (FAA) “a PSA Airlines Bombardier CRJ700 regional jet collided in midair with a Sikorsky H-60 helicopter while on approach to Runway 33 at Reagan Washington National Airport around 9 pm local time.

No one is expected to have survived a collision between an American Airlines plane and an Army helicopter Wednesday night near Ronald Reagan Washington National Airport, officials said.WHAT WE KNOW SO FAR» American Eagle Flight 5342 (Wichita,

Washington D.C. Mayor Muriel Bowser joins Joy Reid to discuss the latest in the recovery efforts of the victims of the deadly plane crash that killed 67 on Wednesday.