What was found
AIRCRAFT WAS ON TAKEOFF ROLL ACHIEVED APPROXIMATELY 20 KNOTS, CREW HEARD LOUD BANG AND AIRCRAFT VEERED LEFT. PASSENGERS REPORTED FIRE/SPARKS COMING FROM NUMBER 1 ENGINE. ENGINE SHUT DOWN ON ITS OWN WHEN THROTTLE WAS RETARDED. FIRE DEPARTMENT SPRAYED STRAIGHT WATER (NO FOAM) INTO INLET AND EXHAUST OF NUMBER 1 ENGINE. NO INJURIES REPORTED. UPON WALK AROUND INSPECTION IT WAS NOTED THAT FAN WAS LOCKED AND COULD NOT BE TURNED. NO OTHER EXTERNAL DEFECTS OR DAMAGE TO THE ENGINE WERE NOTED. REPLACED NR 1 ENG PER TRANS 6T103.