As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BWI - STA 4923 - CREW REPORTS - CREW AND PASSENGERS HEARD LOUD SOUND. CAPTAIN THEN NOTICED THE LT ENGINE EGT WAS 800 DEGREES WITH THE TORQUE DECREASING. LT POWER LEVER WAS PULLED BACK AND THE EGT STAYED AT 800 DEGREES, LT ENGINE WAS SHUT DOWN. AIRCRAFT WAS ON FINAL APPROACH INTO BWI. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT.