What was found
SETTING STANDARD POWER ON EWR 4L, WIND 3309, AIRCRAFT BEGAN TO ROLL, AND IMMEDIATELY AND EXPLOSION OCCURRED, PULLING THE AIRCRAFT HARD LEFT. AIRCRAFT EXITED THE RUNWAY WITH TORCHING FROM LEFT ENGINE REPORTED BY TRAILING AIRCRAFT. NR 1 ENGINE SHUTDOWN ACCOMPLISHED AFTER FIRE REPORTED. TOWER ASKED IF EMERGENCY TRUCKS REQUIRED. WE ACCEPTED BECAUSE THERE WAS NO FIRE INDICATION IN COCKPIT. IDLE POWER ON NR 1 NORMAL DURING ABORT. INSPECTED ENGINE, FOUND DAMAGE TO NR 7 COMPONENT TRAILING EDGE NR 8 AND NR 9 COMPONENT SECTION BLADES WERE MISSING. S/D COMING.