The A320 was New York-bound, originating in Las Vegas with 135 (155 by another report) people aboard. The loss of the hydraulic system caused the plane to lurch sideways and make steep turns.
“People were getting sick. Some people were throwing up. There were a lot of people getting nauseous,” passenger Tom Mizer told the New York Post.
“People on board got a little freaked. People were upset. Nobody was crazy, but everyone was upset," he added. A cabin crew member tried to calm passengers by smiling, saying that if she wasn't scared they shouldn't be.
One of the pilots declared an emergency and radioed back to the Las Vegas airport. But, according to The Post, because that model plane cannot dump its fuel, the pilots had to circle the Vegas Strip until enough fuel was burned to allow a safe landing.
After the plane had landed, the aircraft had to then be towed to the gate because a wheel was not functioning, McCarran Airport officials told ABC.
"JetBlue takes all incidences seriously, and the safety of our customers and crewmembers is our No. 1 priority. The actions the crew took in response to this event truly represent who we are and our core value -- safety," the airline said in a statement.
Last week a United flight was forced to make an emergency landing after the plane was thrashed by severe turbulence. In May, an Air Canada jet made an emergency landing after an engine shut down, and another United plane had an emergency landing after the pilot noticed an out-of-the-ordinary engine vibration.