According to US media reports, on October 5, local time, a British Airways passenger plane declared a state of emergency while en route from London to Chicago in the US. According to data from the flight tracking website, about 30 minutes after takeoff, the flight altitude of this Boeing 777 dropped from 36,000 feet to 9,000 feet in about 7 minutes, which means it dropped almost 8,230 meters. The cause of the accident is currently unclear. The passenger plane made a U-turn over Ireland, then circled over the Bristol Channel in western England for about 4 hours, and finally landed at London Heathrow Airport at 5 p.m. local time.

According to US media reports, on October 5, local time, a British Airways passenger plane declared a state of emergency while en route from London to Chicago in the US. According to data from the flight tracking website, about 30 minutes after takeoff, the flight altitude of this Boeing 777 dropped from 36,000 feet to 9,000 feet in about 7 minutes, which means it dropped almost 8,230 meters. The cause of the accident is currently unclear. The passenger plane made a U-turn over Ireland, then circled over the Bristol Channel in western England for about 4 hours, and finally landed at London Heathrow Airport at 5 p.m. local time.