LNDG PROC LNDG OVERSHOT RESULTING IN RWY EXCURSION AT END OF RWY. ACFT DAMAGED 1 PROP; WINGTIP. NON TWR PVT ARPT.

Narrative

PARACHUTISTS WERE DROPPED AT APPROX 6000 FT AGL. PREVIOUSLY; ON CLBOUT; MODERATE TURB WAS EXPERIENCED FROM SURFACE TO 1500 FT AGL. SURFACE WINDS WERE GUSTY FROM SE AT GREATER THAN 15 KTS. DSCNT WAS NORMAL TO 1500 FT; WHERE MODERATE TURB WAS AGAIN EXPERIENCED. ON FINAL APCH; AIRSPD WAS KEPT TOO HIGH; APPROX 95 MPH; AND FLAPS WERE NOT EXTENDED UNTIL SHORT FINAL. IT WAS MY PERCEPTION THAT WITH THE VERY GUSTY XWIND (WE HAVE ONLY 1; A N/S RWY); I SHOULD KEEP MY SPD UP FOR CHANGES OF WIND SHEAR. I WAS HOWEVER; LIGHT AS I HAD DROPPED 4 JUMPERS AND WAS ALONE IN THE AIRPLANE. THE LATE ADDITION OF FLAPS DID NOT OFFER THE DSCNT PATH TO WHICH I WAS ACCUSTOMED; AND I TOUCHED DOWN LONG AND FAST ON OUR APPROX 2500 FT GRASS RWY; WHICH WAS WET FROM RAIN. BRAKING ACTION WAS MINIMAL AND THE TIRES SKIDDED; PUMPING THEM HELPED SOME BUT NOT SIGNIFICANTLY. I BELIEVED THAT IT WAS GOING TO BE ABLE TO FULLY STOP; AND INDEED WAS NEARLY STOPPED WHEN REACHING THE END OF THE RWY WHERE THERE IS A SMALL DITCH BEFORE AN E/W ROAD; PERPENDICULAR TO THE RWY. THE ACFT SLID INTO THE DITCH; STRIKING THE PROP AND THE R (LINE OF FLT) WINGTIP. THE WINGTIP DAMAGE WAS LIMITED TO ABOUT AN 8 INCH DIAMETER AREA OF SKIN THAT WAS COMPRESSED. FAILURE TO GAR IS PROBABLY THE MAIN ACTION THAT CAUSED THIS INCIDENT. FACTORS WERE A RELUCTANCE TO REENTER THE SURFACE TURB; A SEWAGE TREATMENT PLANT ACROSS THE STREET WITH PWR LINES; AND THE EXPECTATION THAT THE AIRPLANE WOULD FULLY STOP (IT NEARLY DID). EARLIER RECOGNITION OF A BAD SETUP WOULD HAVE ALLOWED A GAR WITHOUT GETTING 'INTO THE HOLE' WHERE FEW OPTIONS REMAINED.