What was found
STRONG BURNING RUBBER SMELL ROWS 22 THRU 28 STARTED TAXI AND SMELL BECAME STRONGER PERFORMED A VISUAL INSPECTION TO ALL AFT OVEN AT 424 AND FOUND AFT CENTER OVEN WITH A VERY STRONG ODOR AND DEBRIS. REMOVED AND INSTALLED NEW OVEN IN REF AMM 25-34-00, ALSO COMPLIED WITH FIM TASK 21-00-00-810-806. NO ODOR WAS FOUND AFTER ENGINE RUNS. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1367748 S/N OFF 06633 OVEN, LARGE, EX OFF 29-2532-9-0002 6633 ON 29-2532-9-0002 8371.