As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. 10 HRS +45 MIN INTO FLIGHT STRONG ELECTRICAL SMELL IN AFT B/C, WENT AWAY AFTER 10 MIN. SMELL RETURNED 12 HR +45MIN IN FLT ON FINAL. REPLACED LOWER LEFT RECIRCULATION FAN AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK, PER AMM 21-25-17.