C182 LOSES PWR; MAKES PRECAUTIONARY OFF ARPT LNDG.

Narrative

AFTER DROPPING SKYDIVERS AT 9500 FT AGL; A STEEP UNCOORD SPIRAL WAS ENTERED TOO RAPIDLY LOSE ALT. AT APPROX 1000 FT AGL THE SPIRAL WAS DISCONTINUED AND A FORWARD SLIP APPLIED AS A 45 DEG ENTRY TO A L DOWNWIND LEG. THIS DOWNWIND LEG WAS CLOSE TO THE RWY AND WAS SET UP FOR A SHORT APCH. BECAUSE OTHER TFC ON FINAL WAS SLOWER THAN ANTICIPATED; THE DOWNWIND LEG WAS EXTENDED. ABOUT 1/3 MI FROM THE RWY AT APPROX 400 FT AGL; THE ENG QUIT MAKING PWR; AN IMMEDIATE TURN TO THE RWY WAS MADE AND A GLIDE ESTABLISHED. IT BECAME OBVIOUS THAT SOME TREES OFF THE END OF THE RWY WOULD NOT BE CLRED AND AN ALTERNATE LNDG SITE WAS SELECTED. THE ALTERNATE SITE REQUIRED A R 120 DEG TURN. AFTER MAKING THE R TURN JUST BEFORE TOUCHDOWN THE ENG BEGAN MAKING PWR. A PRECAUTIONARY LNDG WAS MADE OFF ARPT. FUEL QUANTITY WAS CHKED AND APPROX 8 GALLONS REMAINED IN THE R TANK; THE L TANK WAS LESS THAN 1 GALLON. THE UNUSABLE FUEL FOR THIS ACFT IS LISTED AS 5 GALLONS. FUEL WAS ADDED AND THE ACFT FLOWN TO THE ARPT. I SUSPECT FUEL WAS UNPORTED BY PROLONGED UNCOORD FLT AND LOW FUEL LEVELS. I RECOMMEND NO PROLONGED UNCOORD FLT BELOW 1500 FT AGL. A CONTRIBUTING FACTOR ALSO WAS A DELAYED JUMP RUN DUE TO OTHER TFC.