BA ▲ +0.0% - The Boeing Company $BA A British Airways Boeing 777 en route from London to Chicago declared an emergency on Oct. 5 after flight-tracking data showed its altitude fall from 36,000 ft to 9,000 ft — a drop of roughly 27,000 ft (8,230 metres) — in about seven minutes. The aircraft turned back over Ireland, circled the Bristol Channel for about four hours and landed at London Heathrow at about 17:00 local time. The cause is unclear; British Airways and Heathrow had no immediate comment. 05-OCT-2026 12:56 PM ET