What was found
DESCENDING THROUGH 8000', A STRONG ODOR OF BURNING PLASTIC. NO SMOKE, 10 MINUTES LATER, THE ODOR DIMINISHED. FLIGHT ATTENDANTS REPORTED THE ODOR IN THE CABIN, STRONGEST IN MID CABIN. FOUND SOF COMING FROM THE LT PACK COMPONENTS. THE AIRCRAFT WAS GROUNDED. ACCOMPLISHED J/C 26L00021001 SOF INITIAL TROUBLESHOOTING AND J/C 26L00021004, DECONTAMINATION OF ENVIRONMENTAL CONTROL SYSTEM. REPLACED THE AFFECTED LT PACK COMPONENTS.