British Airways London-Chicago flight plunged 28,000 feet before declaring emergency: What tracking data shows
A British Airways flight operating from London to Chicago on Monday suddenly plunged 28,000 feet after about an hour into its journey, a distance equivalent to almost 10 times the height of Dubai's Burj Khalifa, the world's tallest building.
British Airways (AFP)The flight BA295 declared an emergency after squawking 7700 and descended from an altitude of 37,000 feet to an altitude of 9,000 feet within minutes. The flight then made a U-turn back to the United Kingdom, with tracking data revealing it had been diverted to London.
The flight, which took off from London's Heathrow Airport at around 11.50 am local time, according to flight tracking data, and had a scheduled flight time of eight hours and 40 minutes to Chicago O'Hare International Airport (ORD).
After takeoff, it started its ascent and reached its cruising altitude of 37,000 feet. However, the flight, a Boeing 777-200ER, suddenly plunged to an altitude of 9,000 feet, registering a drop of 28,000 feet, and then took a U-turn when it was flying over Ireland's airspace.
It was diverted to London, flight-tracking data showed, and then circled multiple times in the airspace between Wales and Ireland.
The Boeing 777, after its diversion to London, kept flying in circles in an apparent effort to reduce its fuel weight as it prepared to return to Heathrow.
The aircraft was seen flying in circles, likely to burn off fuel before landing. Long-haul aircraft can carry a large amount of fuel for transatlantic journeys, and reducing the fuel load can help bring the aircraft closer to an appropriate landing weight during an early return.
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