As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH INTO KBWI NUMBER FOUR ENGINE FIRE WARNING CAME ON INTERMITTENTLY. THE CREW SHUTDOWN NUMBER FOUR ENGINE AS A PRECAUTION, THEY LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND TIGHTENED LOOSE CLAMP ON HIGH STAGE BLEED VALVE. OPERATIONAL CHEK GOOD IAW MAINTENANCE MANUAL 20-11-0. ACFT WAS RETURNED TO SERVICE.