As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS DURING CLIMB FROM FL 310 TO FL 360 PLASTIC ODOR SMELL. COULDN'T DETERMINE WHERE IT CAME FROM, 5 MINUTES AFTER LEVEL OFF IT STARTED DISIPATING (COCKPIT). MAINTENANCE FOUND SOURCE OF PLASTIC SMELL COMING FROM AVEC EXTRACT FAN IN E&E BAY. REMOVED & REPLACED EXTRACT FAN IAW AMM 21-26-51. NO SMELL OR ODOR PRESENT.