What was found
CLIMBING THROUGH FL 250 FA REPORTED SOUR SMELL PACK 2 WAS ISOLATED AND THE SMELL DISSAPATED AIR QUALITY REPORTING FORM COMPLETED -FOLLOWING TSM 05-50-00-810-831-A PERFORMED LEVEL A DECONTAMINATION OF THE ECS IAW AMM 21-00-00-615-802-A. USING BOTH APU BLEED & ENGINES 1 (2) BLEED WERE UNABLE TO DUPLICATE THE ODOR EVENT THROUGHOUT THE CABIN OR FLIGHT DECK. DETERMINED A/C OK FOR RETURN TO SERVICE. MOC NOTIFIED. MOC # 120719.