What was found
AIRCRAFT WAS NOT GROUNDED: WHILE EN ROUTE APPROXIMATELY 45 MINUTES INTO THE FLIGHT, FLIGHT ATTENDANT NOTIFIED COCKPIT OF A BURNING RUBBER OR PLASTIC SMELLCONCENTRATED IN THE AREA OF ROW 22 AND 23. THEY SAID IT LASTED APPROXIMATELY 3 MINUTES AFTER WHICH IT DISSIPATED. AS A PRECAUTION THEY HAD ALL THE PASSENGERS UNPLUG ALL ELECTRONIC DEVICES AND REMOVED POWER FROM THE OUTLETS. MAINTENANCE FOUND CABIN FAN 2 (FIN 14GH) TO BE THE CAUSE OF THE ELECTRICAL AND PLASTIC SMELL. ITEM PLACED ON MEL REF MIC # 1816869. COMPLIED WITH SMOKE ODOR FUMES INITIAL TROUBLESHOOTING PER WORK CARD 26L00021001. **SUPPLEMENTAL REPORT WILL BE SUBMITTED.** (OPEN)