AIR TAXI PLT MAKES EMER LNDG WHEN ENG FAILS.

Narrative

DURING CRUISE AT 2000 FT MSL THE ENG BEGAN LOSING PWR. THE FUEL SELECTOR WAS CHANGED FROM THE R TANK TO THE L TANK TO THE 'BOTH' POS; BACK TO THE R TANK AND BACK TO THE L TANK WITH NO RESPONSE FROM THE ENG. I RADIOED ANOTHER PLT I HAD HEARD TALKING ON THE RADIO AND TOLD HIM I WAS EXPERIENCING A POSSIBLE ENG FAILURE. I GAVE HIM MY POS BEFORE CONTACT WAS LOST. I WENT THROUGH EMER PROCS OF CHKING AND SETTING THE MIXTURES PROP AND THROTTLE CTLS. I APPLIED CARB HEAT AND TRIED USING THE PRIMER -- ALL TO NO AVAIL. WHEN I REALIZED THAT THE ENG WAS NOT GOING TO RESTART; I BEGAN MY FINAL PREPARATION FOR A FORCED LNDG. THE AREA I WAS IN WAS A REMOTE AREA IN THE BUSH COUNTRY OF ALASKA. THE TERRAIN WAS RUGGED AND I SELECTED A FLAT GRASSY AREA FOR LNDG. I SELECTED LNDG FLAPS AND TOUCHED DOWN AS SLOWLY AS POSSIBLE. THE AIRPLANE ROLLED MOMENTARILY UNTIL THE MAIN GEAR SANK INTO THE SOFT TURF. THE AIRPLANE THEN SKIDDED ON ITS NOSE AND THEN SLOWLY ROLLED OVER AND CAME TO REST UPSIDE DOWN. I PERSONALLY RECEIVED NO INJURIES. NO CAUSE HAS YET BEEN FOUND FOR THE ENG FAILURE (I STILL HAD APPROX 1 HR OF FUEL ONBOARD) AND I WOULD NOT HAVE DONE ANYTHING DIFFERENTLY AS I BELIEVE THAT I DID THE BEST I COULD TO MINIMIZE AIRPLANE DAMAGE AND PREVENT PERSONAL INJURY.