SMA X CLRED FOR LNDG OCCUPIED RWY. LANDED WRONG RWY WITHOUT CLRNC. SYS ERROR. PLTDEV.

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X HAD DEPARTED RYAN ARPT FOR TUS; A TRIP OF ABOUT 10 MINS. I CONTACTED TUS ARSA AND THEY REPLIED WITH AN ALT AND TO EXPECT A R PATTERN FOR RWY 11R. IN A SHORT TIME I WAS TOLD TO CONTACT TUS TWR. THEY CLRED ME FOR A R BASE TO RWY 11R. I WAS ON FINAL FOR RWY 11R; WHEN THE CTLR CONTACTED ME WITH THIS COMMAND; 'WARRIOR CLRED TO RWY 11L.' I IMMEDIATELY REPEATED THE COMMAND TO HIM. IT IS NOT UNUSUAL FOR THIS CHANGE OF RWY WHEN THE ARPT IS NOT BUSY AND THERE IS NOT ANOTHER PLANE COMING IN ON RWY 11L. IT IS CLOSER TO THE PARKING AREA. I TURNED L TO LINE UP WITH RWY 11L AND CONTINUED ON FINAL. WHEN I WAS ABOUT 200 FT ABOVE THE TOUCHDOWN POINT; MY HUSBAND TOLD ME THERE WAS A LOW WING PLANE ON THE R ABOUT TO CROSS RWY 11L. HE THEN SAID THERE WAS A HIGH WING PLANE ON RWY 11L ABOUT TO TKOF. I CALLED THE TWR AND SAID LOUDLY THAT THERE WAS A PLANE ON THE RWY. I IMMEDIATELY TURNED R AND CALLED THE TWR AGAIN AND SAID; 'DO YOU REALIZE THAT YOU CLRED ME TO LAND ON RWY 11L AND THERE IS A PLANE TAKING OFF ON RWY 11L?' HIS REPLY WAS 'I CALLED THE WRONG ACFT NUMBER. THE XMISSION WAS FOR A COMANCHE TO CROSS THE RWY.' I THEN LANDED ON RWY 11R WHICH I HAD FIRST BEEN CLRED TO LAND ON AS THERE WASN'T ANOTHER PLANE COMING IN. I CALLED THE TWR LATER AND TALKED TO THE CTLR. HE ADMITTED THAT HE HAD CALLED THE WRONG ACFT NUMBER BUT SAID HE HAD NOT HEARD MY ACKNOWLEDGEMENT OF HIS COMMAND. I ASKED ABOUT LISTENING TO THE TAPE BUT HE SAID THAT I WOULD HAVE TO CONTACT HIS SUPVR.