What was found
GSO - FL 8028 - AT APPROXIMATELY 600 FEET AGL AFTER TAKEOFF FROM GSO, THE LEFT ENGINE EXPLODED. TOWER ADVISED CREW THAT ENGINE WAS TRAILING SMOKE AND FIRE. FLIGHT RETURNED TO GSO AND GROUND EMERGENCY CREWS EXTINGUISHED THE ENGINE FIRE. NO FIRE WARNINGS RECEIVED IN COCKPIT. SINGLE ENGINE TIME 4 MINUTES. MAINTENANCE REMOVED AND REPLACED THE LEFT ENGINE AND TRIM RAN PER JOB CARD. (M)