“Twelve people were rushed to a hospital, one of whom got very serious injury. Five others were only treated at the health clinic of the airport. All of them are Chinese nationals,” he told Xinhua news agency.
One of the injured is a crew of the airline which carried 204 passengers and 12 crew, Pramuharjo said.
The turbulence incident is the second time involving Airbus 300-200 in Indonesia this week.
On Wednesday, Etihad Airways flight EY74 from Abu Dhabi to Jakarta encountered severe turbulence, 45 minutes prior to landing at the main airport in Jakarta, leaving 31 people wounded with nine hospitalised, and damaging cabin storage area, according to the spokesman.