As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAINT INTERMITTENT SMELL OF BURNING PLASTIC COMING FROM FLIGHT DECK AREA. PACK 1 WAS SHUT OFF BUT NO DIFFERENCE WAS NOTICED.-DURING INSPECTION FOUND AVIONICS FAN MAKING AN UNUSUAL NOISE. R+R AVIONICS FAN BLOWER I.A.W AMM 21-26-51-400-001-A OPS CHECK GOOD NO DEFECTS NOTES AT THIS TIME.