As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON TAKEOFF ROLL FROM CLT WITH INTENTION TO FLY TO TOL. CREW NOTED NR 4 ENGINE WAS NOT PRODUCING SELECTED POWER. CREW REJECTED TAKEOFF WHEN GROUND SPEED REACHED 80 KNOTS. CREW RETURNED TO BLOCKS. UPON INSPECTION, MAINTENANCE DISCOVERED NR 4 ENG FUEL SHUT OFF LEVER IMPROPERLY SECURED. MAINTENANCE RESECURED FUEL SHUT OFF LEVER. OPERATIONALLY CHECKED ENGINE AND FOUND OPERATION NORMAL. ALL WORK WAS COMPLETED PER THE APPLICABLE MANUALS AND THE AIRCRAFT WAS RETURNED TO SERVICE.