American Airlines forced to ground a plane for the second time after members of the crew and passengers on board suffered from a mystery illness 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...