An illness that led an American Airlines pilot to abort a flight Wednesday remains a mystery a day after the incident.
The pilot captaining American Airlines Flight 109 from Los Angeles to London decided to return the plane to the UK just hours after it departed when a member of the crew fainted and five others complained that they felt sick. The Boeing 777 plane landed safely and emergency health workers met passengers on the ground.
“Our maintenance team conducted a thorough inspection of the aircraft, including a test flight, and found no issues,” the airline said in a statement. The air filters were replaced “out of an abundance of caution,” an airline spokesperson said.