As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. DURING TAKEOFF ROLL THE NR 1 ENGINE WOULD NOT ACCELERATE BEYOND 1.2 EPR WITH RPM INDICATING LOWER THAN RIGHT ENGINE. ABORTED TAKEOFF AT APPROXIMATELY 20 KNOTS. MAINTENANCE FOUND NR 1 ENGINE PRESSURE RATIO BLEED CONTROL(PRBC) SCREEN BLOWN OUT. REMOVED AND REPLACED PRBC ASSEMBLY IAW AMM 75-31-01. OPERATIONAL CHECKS AND ENGINE RUN AT ALL POWER SETTINGS NORMAL.