As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EQUIP COOLING HORN IS GOING OFF WITH AN UPPER LEVEL ADVISORY EICAS EQUIP COOLING MSG. ALSO HAS AN AIR TEMP HIGH STATUS MSG WITH MAINT CODE 21-14081. ACP FIM 21-27 TASK 821, FOUND EQUIP LOW FLOW DETECTOR M21582 TO BE DEFECTIVE. REPLACED LOW FLOW SENSOR PER MM. SYSTEM OPERATION RETURNED TO NORMAL AND OPS CHECKED OKAY.