As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD EQUIPMENT OVERHEAT EICAS MESSAGE DISPLAYED AND OVERHEAT LIGHT ILLUMINATED, LIGHT REMAINED EXITING. AFTER SELECTOR WAS POSITIONED TO STBY. TROUBLESHOT IAW ALERT H168044 AND FIM 21-58-815-841. FOUND RUBBER COUPLING SEPARATED FROM FLIGHT DECK AIRCRAFT DUCTS AT BS 368 AND BS 654. SECURED WITH NEW STRAPS. SYSTEM CHECKED GOOD IAW AMM 21-58-00-705-045.