What was found
DESCENDING THROUGH 8000', A STRONG ODOR OF BURNING PLASTIC. NO SMOKE, 10 MINUTES LATER THE ODOR DIMINISHED. FLIGHT ATTENDANTS REPORTED ODOR IN CABIN, STRONGEST IN MID CABIN. FOUND SOF COMING FROM LT PACK COMPONENTS. PARTIAL WORK ACCOMPLISHED-ACCOMPLISHED J/C 26L00021001 SOF INITIAL TROUBLESHOT AND J/C 26L00021004 CONTAMINATION OF ENVIRONMENTAL CONTROL SYSTEM. REPLACED THE LEFT PACK COMPONENTS. HEAT EXCHANGER SEPARATED AND FOUND DIFFUSER DRY ROTTED.