AC68 PLT FORGOT TO EXTEND THE LNDG GEAR.

Narrative

I WAS FLYING THE LEG FROM NORTH PLATTE; NE; TO GRAND ISLAND; NE; ON THE EVENING OF JAN/THU/99. IT WAS ABOUT 1000 FT OVCST WITH 3-4 MI VISIBILITY WITH LIGHT SNOW. I RECEIVED APCH CLRNC ABOUT 25 MI OUT FROM ZMP. AT THE TIME I RECEIVED CLRNC I WAS INFORMED THAT AN ACR WAS RIGHT BEHIND ME COMING OVER FROM KEARNEY; NE. THE WINDS WERE FROM THE S SO I WAS USING THE VOR RWY 13 CIRCLE TO RWY 17 APCH. APPROX 10 MI OUT; CTR HAD ME CHANGE TO ADVISORY FREQ AND TOLD ME TO CANCEL AS SOON AS POSSIBLE BECAUSE THE ACR WAS RIGHT BEHIND ME. AFTER I DSNDED BELOW THE CLOUD DECK; I SAW THE ARPT ABOUT 2-3 MI OUT AND CALLED MINNEAPOLIS BACK AND CANCELED IFR. I CIRCLED FOR RWY 17 AND AFTER ROUNDING OUT I HEARD A SCRAPING SOUND AND IMMEDIATELY PULLED BACK ON THE YOKE AND LOOKED OVER AND SAW THAT THE LNDG GEAR WAS NOT DOWN. I APPLIED PWR; BECAME AIRBORNE AND DID A TEARDROP FOR RWY 35. AFTER LNDG; I INSPECTED THE ACFT AND FOUND ONLY MINOR DAMAGE TO A COUPLE OF ANTENNAS ON THE BOTTOM OF THE AIRPLANE. THERE WAS NO DAMAGE TO THE SKIN OF THE AIRPLANE NOR TO THE PROPS.