As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GNDED. DURING FLIGHT, FLIGHT ATTENDANTS REPORTED ELEC BURNING SMELL IN BUSINESS CLASS. EICAS RECIRCULATION FAN MSG INDICATED. TURNED RECIRCULATION FANS ON & ODOR DISSIPATED. REPORTED AFT UPPER RECIRCULATION FAN CB TRIPPED & FOUND AFT UPPER RECIRCULATION FAN JAMMED. R & R AFT UPPER RECIRCULATION FAN & ACCOMPLISHED OPERATIONAL CHECK IAW AMM 21-25-01.