What was found
EXPERIENCED A MASTER WARNING & FIRE INDICATION ON THE NR 2 ENG, SHORTLY AFTER GETTING INTO SOME HEAVY PRECIPITATION. THE PILOT RESET THE MASTER WARNING, BOTH THE MASTER WARNING & ENG FIRE INDICATION WENT OUT. ALL OTHER ENG PARAMETERS WERE NORMAL. HE ASKED THE MEDICAL CREW TO LOOK OUT AT THE ENG & THEY REPORTED EVERYTHING LOOKED NORMAL. SHORTLY AFTER BOTH INDICATIONS CAME ON AGAIN. THE PILOT RESET THE MASTER WARNING, BOTH THE MASTER WARNING & ENG FIRE INDICATION WENT OUT. THIS HAPPENED 1 MORE TIME WHILE HE WAS SETTING UP FOR THE APPROACH. THE 3RD TIME HE RESET THE MASTER WARNING THE ENG FIRE INDICATION STAYED ON. THE PILOT SHUT THE ENG DOWN, DISCHARGED THE ENG FIRE EXTINGUISHING BOTTLE & LANDED SAFELY.