As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN REFERENCE TO PREVIOUS WRITE UP WHILE AT CRUISE WE EXPERIENCED THE SAME ELECTRICAL/MELTING SMELL AT FL200 AND SMELL SAME FROM CAPTAIN SIDE MAIN AIR GASPER. REMOVED AND REPLACED RAM AIR VALVE IAW AMM 21-52-04 OPS CHECK GOOD NO DEFECTS AND NO ELECTRICAL SMELL NOTED.