As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEVEL 1 "AVIONICS FAN OVERD" DURING CRUISE FOUND UPPER MCD SEAL PULLED OUT. REINSTALLED IAW AMM 52-00-00. PERFORMED OPS CHECK OF AVIONICS COOLING FANS IAW KP 3764587, CHECK GOOD. NO DEFECTS NOTED AT THIS TIME. COULD NOT DUPLICATE. FIM 21-26-04.