As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF, THE NR 4 ENGINE DID NOT REACH TAKEOFF POWER AND PNEUMATIC HIGH STAGE LIGHT DID NOT EXTINGUISH WHEN POWER WAS SET FOR TAKEOFF. AIRCRAFT ABORTED TAKEOFF AND RETURNED TO THE GATE. REPLACED THE HIGH STAGE VALVE, HIGH STAGE CONTROL, AND PNEUMATIC LINE. EXACT PART CAUSING FAULT TO BE DETERMINED.