What was found
AIRCRAFT 5009, AT CRUISE PLASTIC BURNING SMELL STARTED IN THE BACK OF THE AIRCRAFT AND MOVED FORWARD THROUGH CABIN. CREW INFORMED SMELL WENT AWAY DURING QRH. CORRECTIVE ACTION: INSPECTED COFFEEMAKERS, CABIN OUTLETS, AND INSEAT MONITORS/USB PORTS. FOUND VARIOUS PEPPERS EXPOSED AND SPREAD THROUGHOUT FWD CARGO. MCC NOTIFIED. CLEANED FWD CARGO, REMOVED ODORS, AND REPLACED RECIRCULATION FILTERS. (LP 5901018)