A passenger plane was issued an urgent order to change course to avoid a collision with Air Force One as it brought Donald Trump to the UK for his State Visit.
Spirit Airlines flight 1300 was flying over Long Island, New York, when it came within miles of the presidential plane.
In audio now published on social media, an air traffic controller could be heard saying: "Pay attention. Spirit 1300, turn 20 degrees right.
"Spirit 1300 turn 20 degrees right now."
Spirit Airlines flight 1300 came within miles of the presidential plane (file photo)
|GETTY
Instructing the pilots of the passenger jet for a third time, the air traffic controller raised his voice and told them to follow his orders "immediately".
Spirit Airlines 1300 then seemed to heed the warning and said they would look out for the "white and blue" Boeing 747.
In response, the air traffic controller said: "I gotta talk to you twice every time. Pay attention. Get off the iPad."
According to FlightRadar24, the Spirit Airlines flight was going from Fort Lauderdale to Boston and appeared to be flying parallel to Air Force One.
The Spirit Airlines plane was warned to take action to avoid Air Force One
|PA
A spokesman for Spirit Airlines said: "Safety is always our top priority. Spirit Airlines flight 1300 followed procedures and Air Traffic Control instructions while en route to Boston and landed uneventfully at Boston."
Federal Aviation Administration standards require passenger planes to keep at least 1.5 miles of lateral separation and 500 miles of horizontal separation.
While the two planes did not exceed these requirements, it is thought the added stress from the air traffic controller was due to the inclusion of Air Force One, which had both Donald and Melania Trump on board.
The couple were on their way to the UK for the President's historic second State Visit.
DONALD TRUMP'S STATE VISIT - READ MORE:
PICTURED: Donald Trump and wife Melania disembarking from Air Force One at Stansted on Tuesday
|REUTERS
Having landed at Stansted Airport on Tuesday evening, Mr Trump was honoured with a tour of the Windsor estate before attending a state banquet in the evening.
Air Force One in fact refers to two identical planes which are specially adapted to carrying the President.
Despite appearing similar to a normal passenger jet, the Boeing 747-200B series planes are actually classed as military aircraft due to the advanced electronic equipment and defence systems with which they are fitted.
The planes are able to jam enemy radar and can eject flares in order to evade heat-seeking missiles.
As well as being resistant to attack, they are also able to refuel mid-air, meaning they can - if assisted - fly for an unlimited amount of time.
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