NEW : Rolls Royce says it is aware of the incident and providing technical assistance . It was the second time one of the Hong Kong-based airline 's Airbus A330 planes has made an emergency landing . Witnesses say they heard loud bangs , and passengers prayed . The flight returned to Singapore after engine trouble en route to Jakarta , Indonesia . Score: 7
NEW : Rolls Royce says it is aware of the incident and providing technical assistance . Witnesses say they heard loud bangs , and passengers prayed . The flight returned to Singapore after engine trouble en route to Jakarta , Indonesia . Score: 7