As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ON DESCENT NR 3 PITOT INOPERATIVE. EICAS CAUTION MESSAGE APPEARED. STARTED SMELLING ODOR THAN MOMENTS LATER F/A REPORTED SMOKE IN CABIN. DECLARED EMERGENCY LANDING AND EVACUATED ACFT ON GROUND. NO HISTORY CX DAMAGE INSPECTION OVERHEAT BURN DAMAGE FOUND ON LOWER CENTER RT RELAY SUPPORT ACCESS PANEL 224ERW, STEMMING FROM RELAY K0057. R & R RELAY REPLACE ALL ASSOCIATED BURNED WIRING STILL IN PROGRESS.