Authorities say a SkyWest Airlines flight from Chicago has made an emergency landing in Buffalo, New York, and at least one passenger lost consciousness.

A statement from the Federal Aviation Administration says the flight departed from O’Hare International Airport and was bound for Bradley International Airport in Connecticut when it landed at Buffalo Niagara International Airport at about 11:40 a.m. Wednesday.

The FAA says the crew of the Embraer E170 reported a possible pressurization problem.

But SkyWest Airlines spokeswoman Marissa Snow says the plane didn’t appear to have a pressurization problem.

Snow says one passenger lost consciousness. She says the pilots rapidly descended “out of an abundance of caution.” That is the standard move if a plane loses pressure because of the higher oxygen content at lower elevations.

(AP)