AN ACR LTT NICKED ITS PROP AND HOLED ITS FUSELAGE WITH A ROCK.

Narrative

AFTER A NORMAL PREFLT; TAXI AND TKOF CLBING THROUGH 3000 FT; THE ACFT CABIN WOULD NOT PRESSURIZE. AFTER SEVERAL ATTEMPTS OF TRYING TO RESET THE BLEED VALVES; WITH THE PRESSURIZATION CTLR; THE CABIN WAS UNABLE TO BE PRESSURIZED. I CONCLUDED THAT THE AUTOMATIC PSI CTLR WAS NOT OPERATING NORMALLY. I WAS THEN UNABLE TO FLY BACK TO ANCHORAGE AT MY FLT PLAN CRUISING ALT; AS A RESULT OF NO PRESSURIZATION. I OPTED TO TAKE A LOWER RTE; WHICH IN TURN WOULD USE MORE FUEL. I THEN LANDED IN ANIAK TO PUT ON MORE FUEL. THE PAX WERE DEPLANED; THE PLANE WAS REFUELED. I CALLED OPS LETTING THEM KNOW OF MY SIT. THE PAX WERE REBOARDED. AFTER A NORMAL PREFLT; TAXI AND TKOF; THE FLT CONTINUED TO ANCHORAGE AT A LOWER ALT AND; ONCE REACHING ANCHORAGE; LANDED SAFELY. AFTER LNDG AT ANCHORAGE; I NOTICED THAT ONE OF THE BLADES ON THE R PROP HAD SUCKED UP A ROCK ON TKOF AT KSM. THE ROCK; AFTER NICKING THE PROP; STRUCK THE BELLY OF THE ACFT CAUSING A SMALL HOLE. I DID NOT SEE THE HOLE ON PREFLT AT ANIAK. IT WAS IN A DIFFICULT PLACE TO SEE. AFTER FURTHER EXAMINATION FROM MAINT; THE HOLE WAS DETERMINED TO BE THE PROBABLE CAUSE; FOR NOT ALLOWING THE ACFT TO BE PRESSURIZED.