As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NRT INFLIGHT - CREW REPORTED ODOR OF HOT RUBBER OR PLASTIC IN BUSINESS CLASS. TURNED OFF PASSENGER POWER PORTS AND SMELL WENT AWAY. ODOR STRONGEST AROUND SEATS 10AB AND 13AB. LANDED NRT WITHOUT INCIDENT. REPLACED GASPER FAN. SYSTEM GROUND CHECKED NORMAL OPERATION.