A CPR LTT LANDED ON A TXWY.

Narrative

WE WERE INBOUND TO LAS ON THE CROWE 6 ARR. AFTER XING CROWE; WE PICKED UP THE LOC FOR LAS RWY 25R. WE HAD AN ACR 737 IN CLOSE TRAIL BEHIND US AND HAD BEEN ASKED BY APCH TO MAINTAIN OUR BEST FORWARD SPD. BTWN 15 AND 20 NM FROM LAS; WE PICKED UP A VISUAL ON THE ARPT AND WERE CLRED FOR THE VISUAL TO RWY 25L. AHEAD AND TO OUR L WE PICKED UP THE OUTLINE OF A RWY WHICH WE THOUGHT WAS RWY 25L. WE HEADED FOR IT; RECEIVED OUR LNDG CLRNC; AND LANDED. AFTER LNDG THE TWR ADVISED US THAT WE HAD JUST LANDED ON THE CTR TXWY 'A' BTWN RWY 25L AND RWY 25R. IN TRYING TO SORT OUT WHAT FACTORS MAY HAVE CONTRIBUTED TO OUR FAILURE TO IDENT THE PROPER RWY THE FOLLOWING COME TO MIND: 1) WE WERE LOOKING DIRECTLY INTO THE SUN; WHICH MADE VISUAL IDENT OF THE RWY VERY DIFFICULT. 2) POSITIVE IDENT OF RWY 25 L AND RWY 25R IS MADE EVEN MORE DIFFICULT DUE TO THE RUBBER DEPOSITS FROM LNDG ACFT WHICH HAVE ALMOST COMPLETELY OBLITERATED THE NUMBERS PAINTED ON THE RWY. 3) WE HAD BEEN ASKED FOR OUR BEST FORWARD SPD TO MAINTAIN SPACING ON THE 737 BEHIND US. THIS CONCERN ABOUT SPACING MAY HAVE OVERRIDDEN OR COMPROMISED OUR POSITIVE IDENT OF RWY 25L; IN SPITE OF OUR BEST EFFORTS NOT TO LET IT BECOME AN ISSUE WHICH WOULD AFFECT OUR PERFORMANCE. 4) WE WERE MENTALLY SET UP TO LAND ON RWY 25R. WE HAD ASKED FOR RWY 25R AND HAD BEEN TOLD TO EXPECT IT WHEN WE SWITCHED OVER TO TWR. INSTEAD; TWR TOLD US TO LAND ON RWY 25L; WHICH FOR US WAS AN UNFAMILIAR RWY. WE WERE NOT FAMILIAR WITH ITS RWY ENVIRONMENT; WHICH WOULD HAVE GIVEN US THE VISUAL CUES WE NEEDED TO MAKE A QUICK AND POSITIVE IDENT OF RWY 25L.