美联航一航班起飞后不久遇到故障 发出求救信号

Core Points - United Airlines Flight 108 experienced an engine failure shortly after takeoff from Washington Dulles International Airport on July 25, prompting the pilot to issue a distress signal [1] - The Boeing 787 aircraft was carrying 219 passengers and 11 crew members and encountered the issue at an altitude of approximately 3,000 meters [1] - The pilot declared an emergency and issued a "Mayday" call, while air traffic control instructed the flight to return to the airport [1] - Due to the aircraft's heavy fuel load, it could not land immediately and had to remain airborne for over 30 minutes to adjust its weight before safely landing back at Dulles Airport [1] - United Airlines confirmed that the aircraft experienced a "mechanical failure," but all passengers and crew members disembarked safely [1]