What was found
LEFT ENGINE COMPRESSOR STALL ON TAKEOFF OUT OF EWR AT 1,000 FT, HEARD ONE BANG. ENGINE INDICATIONS DID NOT CHANGE. DURING REMAINDER OF FLIGHT, ALL ENG OPERATIONS NORMAL. ENGINE WAS BORESCOPED AND FOUND WITHIN LIMITS, ACCOMPLISHED HIGH POWER RUN, ACCELERATION AND DECELERATION CHECKS AND ALL PARAMETERS WITHIN LIMITS. CHECKED ENGINE INLET, EXHAUST AND CHIP DETECTOR, NO DISCREPENCIES FOUND.