SkyWest Airlines Flight 5622 had to make an emergency landing at Buffalo Niagara International Airport, New York, on April 22.
The flight, operating as United Express, was en-route from O’Hare International Airport in Chicago to Hartford, Connecticut when three passengers lost consciousness.
The Embraer E170 plane, carrying 75 passengers, landed uneventfully.
The airline said they are looking into the cause of incident, however, they confirmed that there was no pressurization problem in the aircraft.
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