Everything we know about American Airlines Flight 5342 after horror crash with Black Hawk helicopter

A horrific crash between an American Airlines flight and a Black Hawk helicopter has ignited a massive search and rescue operation, with dive teams searching the Potomac River for survivors.

Flight 5342, which originated in Wichita, Kansas, was landing at Ronald Reagan International Airport in Washington DC when it collided with the Sikorksy H-60 Black Hawk helicopter just before 9pm.

The helicopter was carrying three soldiers at the time, a US Department of Defense official told CNN. 

In a statement, the Metropolitan Police Department said it is working with the DC Fire Department and emergency responders to coordinate a 'search and rescue operation in the Potomac River.'

Fatalities have been reported, and NBC Washington says that at least four people had to be pulled to safety by rescue crews.

The crash prompted officials at the international airport to halt all flights as the rescue efforts continue.

Meanwhile, officials within the Trump administration have said they are monitoring the situation, and newly-appointed Transportation Secretary Sean Duffy announced on social media that he is at the Federal Aviation Administration headquarters.

DailyMail.com breaks down everything to know about the horrific crash.

How many people were onboard the aircrafts?

American Airlines has confirmed there were 60 people onboard Flight 5432, which was also carrying four crew members when it crashed. 

The Bombardier CRJ700 could have had up to 65 passengers, however, according to the American Airlines website.

'Our concern is for the passengers and crew on board the aircraft,' the airline said in a statement.

'We are in contact with authorities and assisting with emergency response efforts.'

It then urged anyone who believes their family may have been on the flight to call the airline's toll-free phone number.

Defense officials, meanwhile, have said there were three soldiers onboard the military helicopter, which senior Army officials often use for transport around the nation's capitol.

Where did the aircrafts originate from? 

American Airlines Flight 5342 departed from Wichita Dwight D Eisenhower National Airport at 5.18pm and was scheduled to land at Reagan International at 9.03pm, according to tracking information from the airline.

The Black Hawk helicopter had originated from Fort Belvoir, Virginia.

It was on a training flight at the time.

What happened?

The American Airlines plane was on its final approach to Runway 33 at Reagan International Airport and was at an altitude of about 300 feet when the collision happened.

In audio from the air traffic control tower around the time of the crash, a controller is heard asking the helicopter, 'PAT25 do you have the CRJ in sight,' in reference to the passenger aircraft.

'Tower, did you see that?' another pilot is heard calling seconds after the apparent collision. 

The impact of the crash is said to have split the plane in half, and caused it to plummet into the Potomac River.

The Black Hawk was also left upside down and unstable. 

What is being done to find the passengers?

Local, state and national authorities have mobilized resources to assist with search and rescue efforts.

Virginia Gov. Glenn Youngkin announced that first responders from across northern Virginia, Washington DC and Maryland 'mobilized quickly' to help find victims, and Maryland Gov. Wes Moore said the Maryland State Police have deployed divers to the scene.

He added that the state's Department of Emergency Management also raised its Emergency Operations Center to 'Enhanced.'

At the federal level, the FBI is assisting the local agencies, and Homeland Security Secretary Kristi Noem said the US Coast Guard is 'deploying every available ... resources for search and rescue operations.

'We are actively monitoring the situation, and stand ready to support local responders,' she said.  

Defense Secretary Pete Hegseth also noted that the Department of Defense is 'poised to assist if needed.'

The general manager of Washington's transit authority also announced that it has deployed warming buses for any survivors who are retrieved from the icy waters.