As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, PILOT HAD AN ENGINE FIRE INDICATION ON CAUTION PANEL. PERFORMED A NORMAL LANDING AND ACFT TAKEN OUT OF SERVICE. HAD BEEN AN ISSUE ON A PRIOR FLIGHT, TROUBLESHOT AND PARTS REPLACED WHICH WERE THOUGHT TO CORRECT THE PROBLEM. REPLACED THREE ENGINE FIRE DETECTORS AND THE FIRE TEST PUSHBUTTON ON THE 30A PANEL.