( CNN ) -- Three people were taken to a hospital and others were treated at an airport after an Aruba-to-Miami flight encountered turbulence while making its initial descent into Miami , an American Airlines spokesman said . The incident occurred Tuesday night aboard Flight 1780 , about 30 minutes before it landed at 6:06 p.m. , Matt Miller said . Two flight attendants and one passenger were taken to a hospital , where they were treated and released , and a handful of other passengers received medical attention at the Miami airport , Miller said . `` It appears that we had approximately 12 patients , '' said Michelle Fayed , a spokeswoman for Miami-Dade Fire . The turbulence lasted about 15 seconds , Miller said . The Boeing 757 's seat belt sign was on at the time , and nothing on radar showed turbulence was in the area . The flight left Aruba at 3:30 p.m. , carrying 185 passengers and a crew of six , Miller said . Disastrous trip , dream photo ? Show us . Turbulence terrifies you ? Buckle up . Turbulence tales : 'It was just so terrifying ' Turbulence injures three flight attendants on flight to Miami .
Three people were injured , authorities say . The turbulence occurred as the Miami -to- Aruba flight was landing . About 12 people were taken to a hospital , an The Boeing 757 's spokesman says .