SMT AIR TAXI LANDS ON WRONG RWY.

Narrative

I WAS CLRED FOR THE GOLF ARR AND THE FLAMINGO TRANSITION INTO LAS INTL ARPT. I WAS FOLLOWING TFC 2 MI IN FRONT OF MY POS. I LOST THE TFC IN GND CLUTTER WHEN I WAS OVER THE LAS VEGAS WASH MARINA. I ADVISED APCH OF THIS. APCH SAID THE TFC WAS 10 KTS FASTER AND NO FACTOR; AND SAID TO CONTINUE. I CONTINUED DOWN FLAMINGO FOR A L BASE AND THEN WAS PASSED OFF TO TWR AND THOUGHT TWR CLRED ME FOR RWY 19L. I CONTINUED ON BASE TO FINAL AND DID NOT QUESTION THE LNDG INSTRUCTIONS WITH THE TWR. WHEN I TURNED TO FINAL ON RWY 19L THERE WAS AN MLG AT THE HOLD SHORT LINE. I CONTINUED THE APCH; THEN I NOTICED THE MLG STARTED TO MOVE. AT THIS POINT THE TWR TOLD THE MLG TO CONTINUE THE TAXI TO THE OTHER SIDE OF RWY 19L. NO TIME WHEN I WAS ON FINAL DID THE TWR ADVISE ME I WAS LINED UP WITH THE WRONG RWY. THE MLG WAS CLR TO THE OTHER SIDE OF RWY 19L; SO I CONTINUED MY APCH AND LNDG ON RWY 19L. AFTER LNDG AND CLR OF RWY 19L; I CALLED GND CTL. GND CTL CAME BACK AND SAID I LANDED ON THE WRONG RWY AND BE ADVISED YOU WERE TOLD TWICE THAT YOU WERE CLRED FOR RWY 19R. CAUSE OF PROB: I DID NOT READ BACK THE LNDG CLRNC STATING WHAT RWY I WAS CLRED TO LAND ON -- I ONLY ACKNOWLEDGED THAT I UNDERSTOOD WHAT I HEARD. MY MIND WAS SET THAT I WAS LNDG ON RWY 19L; AND I DID NOT HEAR WHAT APCH AND TWR WAS SAYING BECAUSE MY MIND WAS ALREADY MADE UP. IF I WOULD HAVE READ BACK THE RWY THAT I WAS CLRED FOR; THIS PROB WOULD HAVE BEEN CORRECTED LONG BEFORE I LANDED ON THE WRONG RWY. I SHOULD HAVE QUESTIONED THE LNDG CLRNC WHEN THE MLG TAXIED ACROSS THE END OF THE RWY. THE TWR SHOULD HAVE ADVISED ME WHEN THEY REALIZED I WAS LINED UP WITH THE WRONG RWY. I ALSO HAD A VERY URGENT NEED TO GO TO THE BATHROOM; WHICH ALSO OCCUPIED SOME OF MY THOUGHTS.