What was found
DURING APPROACH, PILOT NOTICED RT ENG T HANDLE ILLUMINATED, PILOT FOLLOWED ENG FIRE INFLIGHT CHECKLIST & DISCHARGED ENG FIRE EXTINGUISHER. T HANDLE DID NOT EXTINGUISH AFTER TWENTY SECONDS, AT THAT POINT PILOT PERFORMED RT ENG SHUTDOWN IAW PILOTS OPERATING HANDBOOK. PILOT DECLARED AN EMER & LANDED WITHOUT FURTHER INCIDENT. INSPECTED & FOUND NO EVIDENCE OF FIRE, SUSPECT A FALSE FIRE INDICATION. INSPECTED & TESTED THE RT ENG FIRE DETECTION SYS, NO DEFECTS NOTED. REPLACED FIRE EXTINGUISHER BOTTLE & RINSED ENG AS REQUIRED.