BE33 PLT DID NOT HAVE LNDG GEAR DOWN FOR LNDG.

Narrative

I WAS TEST FLYING A BE33. A MECH WAS IN THE AIRPLANE WITH ME. I DID A TEST FLT AT ABOUT XA00 AFTER WHICH I LANDED AT ZZZ AND RIGGING ADJUSTMENTS WERE MADE TO THE AIRPLANE. I TOOK OFF AGAIN ABOUT XC00. THE AIRPLANE STILL WAS NOT RIGHT; SLIGHTLY DROPPING A WING; SO WE LANDED AT ZZZ1 WHERE A SMALL ADJUSTMENT WAS MADE. WE DEPARTED ZZZ1 BACK TO ZZZ. I WAS CLRED TO LAND. I TALKED TO THE MECH AND TOLD HIM THAT I WAS AT GEAR SPD. AT THAT TIME I PUT THE LNDG GEAR HANDLE IN THE DOWN POS (THE MECH OBSERVED THIS). ON SHORT FINAL APCH; I CHKED FOR A GREEN LIGHT AND I RECALL THAT I HAD THE GREEN. I PROCEEDED ON IN TO LAND. I WAS AT FLAP SPD. I LOWERED FLAPS TO 10 DEGS ONLY BECAUSE OF XWIND. IN THE FLARE; PWR WAS REDUCED FOR LNDG AND NO AUDIBLE ALARM SOUNDED TO INDICATE A PROB WITH THE LNDG GEAR. I NOTICED WE SHOULD HAVE TOUCHED DOWN AND AT THAT TIME I HEARD A SCRAPING SOUND. I APPLIED FULL PWR AND STARTED TO CLB. I LOOKED AT THE LNDG GEAR HANDLE; IT WAS DOWN AND I HAD A GREEN LIGHT. I CYCLED THE GEAR AND FLAPS UP. AT THIS TIME I WAS ABLE TO HOLD ALT. I MADE R TFC PATTERN FOR RWY. ON FINAL APCH; I LOWERED THE LNDG GEAR; I HAD A GREEN LIGHT. OVER THE END OF THE RWY; I LOWERED AND LANDED. TIME AT LNDG WAS APPROX XC40.