LOW TIME GA PLT LOSES CTL OF HIS ACFT; HAS A RWY EXCURSION AND DAMAGED THE ACFT DURING THE SUBSEQUENT NOSE OVER IN A DITCH AT 69R; TX.

Narrative

I WAS EXECUTING A LNDG ON RWY 14 AT ROCKSPRINGS ARPT (69R) AROUND XA15. THE WINDS WERE RPTED BY THE ARPT AWOS AS 070 DEGS AT 8 KTS. THERE WERE MEN AND EQUIP WITHIN 2-4 FT ALONGSIDE THE LENGTH OF THE RWY BEGINNING ABOUT 1/2 WAY DOWN THE 4000 FT RWY. I WAS AWARE THAT THERE WAS ACTIVITY AROUND THE FAR END AND I ATTEMPTED TO SHORTEN MY LNDG. I ATTEMPTED TO EXECUTE A 3-PT LNDG BUT THE MAINS STRUCK THE SURFACE FIRST; AND THEN THE ACFT BEGAN TO PORPOISE 2 OR 3 TIMES. I APPLIED ADDITIONAL BACK PRESSURE ON THE YOKE TO ARREST THE PORPOISING BUT THE ACFT YAWED SHARPLY TO THE R AT A 90 DEG ANGLE AND THEN EXITED THE RWY. IT IMPACTED A DITCH A FEW FT FROM THE EDGE OF THE RWY WHERE THE PROP SPINNER IMPACTED THE GND AND THE ACFT TILTED OVER ON THE NOSE; WITH THE TAIL LEFT POINTING SKYWARD AT A 60 DEG ANGLE. MY PAX AND I IMMEDIATELY SECURED THE ACFT AND EXITED IT. WE SUFFERED NO INJURIES AND THE ACFT SUSTAINED DAMAGE MAINLY TO THE ENG AND PROP. I THINK CONTRIBUTING FACTORS WERE: LOW EXPERIENCE IN TYPE (25 HRS) AND MEN AND EQUIP TOO CLOSE TO THE RWY ENVIRONMENT.