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. (Read more from “Panic on SECOND American Airlines Flight as Mystery Fainting Illness Hits Passengers and Crew” HERE)