ALERT Several crew and passengers suffering with equilibrium on board #AA109

American Airlines flight AA109 to Los Angeles is returning to London Heathrow due to medical emergency on board. When the call for doctors, the aircraft was close to Keflavik (Iceland) but the crew decided to go back to origin.

UPDATE We have confirmation AA109 safely landed runway 27L at London Heathrow at 17:04.

UPDATE American Airlines is confirming medical emergency on board.

UPDATE Landing is expected at 17:03.