What was found
DURING ENGINE RUN ACCELERATION PRIOR TO TAKEOFF ROLL ENGINES WERE STABILIZED ABOUT 1.4 EPR AND WE HEARD A LOUD BANG. AT ABOUT 1.7 EPR AFTER CHECKING ALL THREE ENGINES WE HEAR THE SAME BANG AND COMPRESSOR STALL ON NR 2 ENGINE WHICH WHICH WE SHUT DOWN AND RETURNED TO THE RAMP. VISUALLY CHECK INLET, EXHAUST AND PULLED END CAPS. NO DEFECTS FOUND. REMOVED AND REPLACED PRESSURE BLEED CONTROL VALVE, OPS CHECK GOOD. (M)