Unnerved passengers feared for their lives after a plane was forced to make an emergency landing when passengers and crew passed out mid-flight. The American Airlines flight, which was flying from Brazil to the United States, was travelling at a height of more than 30,000ft when three members of staff became ill. This is the second time this week that the US airline has been forced to ground a plane as a result of a mystery illness on board . According to reports, Flight 904 which left Rio de Janeiro for Miami around 11pm yesterday, but was forced to change direction and land in Brasilia, Brazil.

Four people complained of lightheadedness sparking fears there could be contaminated air on board. Pilots were then forced to ground the plane 580 miles away from its destination. A source said: “”We made an emergency landing because crew members and passengers passed out and became unwell. “It sounds exactly like what happened on the other flight with us not being allowed off the plane for two hours. FULL REPORT