What was found
DURING TAKEOFF, PACKS OFF, TAKE OFF POWER, ENGINE ICE ON, AT APPROX. 400 FT, LEFT EPR STARTED TO FLUCTUATE BETWEEN 2.02 & 1.40, SECOUNDS LATER HEARD A SERIES OF BANGS, BROUGHT LEFT THROTTLE TO IDLE, PERFORMED ENGINE OUT PROGRAM, PERFORMED QRH PROGRAM 72-8, COMPRESSOR STALL STOPPED. ELECTED TO LEAVE LT ENGINE RUNNING AT IDLE THRUST. RETURNED TO DEPARTURE. INFORMED THAT THE LT ENGINE BULLET WAS DETACHED BUT STILL CONNECTED. INSPECTED ENGINE, AND FOUND DAMAGED FRONT ACCESSORY CASE AND INLET BULLET, REPLACED IAW MM 72-21-00.