BE20 PLT HAD ENG 2 FIRE WARNING IN ZMP CLASS E AIRSPACE.

Narrative

THE FOLLOWING IS A RPT ON THE ENG SHUTDOWN INFLT WHICH OCCURRED ON JUL/XA/01 ON A COMPANY B200 ACFT. THIS WAS A PART 91 OP WITH 2 EMPLOYEES OF COMPANY X; A CO-OWNER OF THE ACFT; ALONG WITH MR X ACTING AS OBSERVER PLT ON BOARD. ACFT DEPARTED FROM MACON; GA; AT XA35 AND ARRIVED IN THE WISCONSIN RAPIDS AREA ABOUT XB00. WHILE IN VFR CONDITIONS ON DOWNWIND LEG FOR LNDG ON RWY 20; THE R ENG FIRE WARNING LIGHT ILLUMINATED. I IMMEDIATELY IDLED BACK THE R ENG; THEN THINKING THE SUN MIGHT BE STRIKING THE SENSOR; I BRIEFLY CHANGED HDG. WHEN THIS DID NOT EXTINGUISH THE LIGHT; I SHUT THE ENG DOWN BY MEMORY ITEMS; FOLLOWED BY MR X READING THE ITEMS IN THE EMER SHUTDOWN CHKLIST. I THEN ASKED MR X TO LOOK FOR ANY INDICATION FO FIRE; IE; SMOKE; FLAMES; ETC. MR X NOTICED TRACE OF SMOKE. I VERIFIED. I THEN PROCEEDED TO FIRE THE R ENG FIRE BOTTLE. THE SMOKE STOPPED AND THE FIRE LIGHT WAS EXTINGUISHED. AFTER LNDG AND OPENING THE ENG COWL; IT WAS EVIDENT THAT THE CAUSE OF THE PROB WAS A MALFUNCTION AND LOCKUP OF THE AIR CONDITIONER COMPRESSOR AND THE BURNING UP OF THE COMPRESSOR DRIVE CLUTCH.