What was found
IFSD (SINGLE ENGINE) WHILE AT T/O FOR A NIGHT FLIGHT, AS THE POWER WAS INCREASED TO MAXIMUM, A LOUD NOISE WAS HEARD AND FIRE/SPARKS WERE SEEN COMING OUT OF THE ENGINE FOLLOWED BY WIND DOWN. THE T/O WAS ABORTED AND EMERGENCY DECLARED. FIRE CREWS EXTINGUISHED THE FIRE. POST EVENT INSP FOUND DENTED EXHAUST STACKS, EXHAUST CASE AND GAS GENERATOR WERE CREASED. METALLIC DEBRIS WERE FOUND IN THE EXHAUST. THE ENGINE WILL BE REMOVED AND SENT FOR INVESTIGATION.