PLT OF C210 STRIKES GND WITH PROP AFTER FORGETTING TO EXTEND LNDG GEAR DURING INTERRUPTED APCH PROC. INITIATED GAR UPON HEARING LNDG GEAR WARNING HORN; BUT NOT IN TIME TO AVOID PROP CONTACT WITH THE RWY.

Narrative

I WAS APCHING ROANOKE ON A 230 DEG HDG. ROANOKE WAS LNDG RWY 24; WINDS WERE LIGHT. I WAS 10 MI OUT AND SET UP FOR A LONG FINAL TO RWY 24; DID MY INITIAL LNDG CHKLIST AND STARTED SLOWLY REDUCING PWR (TURBO 210). AT ABOUT 8 MI OUT; WITH NO OTHER APPARENT TFC; I WAS GIVEN A NW HEADING FOR VECTORS FOR ABOUT 3-4 MI THEN TURNED BACK ON ANOTHER VECTOR TO THE SE; THEN CLRED FOR VISUAL TO RWY 24. AT THAT POINT I HAD ADDED PWR BECAUSE OF THE VECTORS AND AS I DID MY SECOND LNDG CHKLIST; DECIDED TO HOLD THE GEAR BECAUSE OF MY SPD AND PWR SETTINGS. ONCE OVER THE RWY; I REDUCED PWR; STARTED MY FLARE AND HEARD THE GEAR WARNING HORN. I IMMEDIATELY ADVANCED THE THROTTLE TO THE FULL POS TO INITIATE A GAR. THE AIRPLANE CLBED NORMALLY WITH NO VIBRATIONS NOR ABNORMAL ENG GAUGE READINGS. I WAS CLRED FOR LNDG ON RWY 33; ENTERED A DOWNWIND AND EXECUTED A NORMAL LNDG. ONLY WHEN I SHUT THE ENG DOWN WAS IT APPARENT THE PROP HAD STRUCK THE RWY SURFACE. THE MISTAKE MADE IS UNDER EVERY CHANGING EVENT (VECTORS; PWR CHANGES; ETC). ON THE LNDG THE PLT SHOULD REVIEW THE LNDG CHKLIST TO CONFIRM PROPER SETTINGS.