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
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 . Sparks were reported from the No . 2 engine and were doused after the plane landed .