Narrative:

We were flight planned from slc to las on the luxor arrival. On contact with ZLA, we were directed to fly direct kasino and the kasino arrival. No runway was given. The ATIS stated that las was landing runway 25 and runway 19. Since runway 25 is the runway usually used, we programmed the FMS for the kasino arrival runway 25L, which is our usual landing runway. However, las vegas approach wanted us to land on runway 19. The arrival is predicated on the landing runway. Because we were not issued a runway for arrival and assumed runway 25, we missed a turn on the arrival miraj fix for runway 19. No conflict was created that we know of. Because each arrival has different arrival paths and altitudes based on runway at las, it is essential that ZLA and las approach state the runway when clearing an aircraft on the arrival. The lack of this information causes the flight crew to assume a runway based on past experience. This situation caused a level of confusion in the cockpit during the last 15 NM of the arrival. The pilots and controllers have to have the same information. Unless the controller tells the pilots what they are expecting the pilots will operate on past experience.

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Original NASA ASRS Text

Title: B757 CREW INBOUND TO LAS INSTRUCTED TO FLY THE LUXOR ARR, BUT NOT ASSIGNED A RWY UNTIL 15 MI FROM THE ARPT.

Narrative: WE WERE FLT PLANNED FROM SLC TO LAS ON THE LUXOR ARR. ON CONTACT WITH ZLA, WE WERE DIRECTED TO FLY DIRECT KASINO AND THE KASINO ARR. NO RWY WAS GIVEN. THE ATIS STATED THAT LAS WAS LNDG RWY 25 AND RWY 19. SINCE RWY 25 IS THE RWY USUALLY USED, WE PROGRAMMED THE FMS FOR THE KASINO ARR RWY 25L, WHICH IS OUR USUAL LNDG RWY. HOWEVER, LAS VEGAS APCH WANTED US TO LAND ON RWY 19. THE ARR IS PREDICATED ON THE LNDG RWY. BECAUSE WE WERE NOT ISSUED A RWY FOR ARR AND ASSUMED RWY 25, WE MISSED A TURN ON THE ARR MIRAJ FIX FOR RWY 19. NO CONFLICT WAS CREATED THAT WE KNOW OF. BECAUSE EACH ARR HAS DIFFERENT ARR PATHS AND ALTS BASED ON RWY AT LAS, IT IS ESSENTIAL THAT ZLA AND LAS APCH STATE THE RWY WHEN CLRING AN ACFT ON THE ARR. THE LACK OF THIS INFO CAUSES THE FLC TO ASSUME A RWY BASED ON PAST EXPERIENCE. THIS SIT CAUSED A LEVEL OF CONFUSION IN THE COCKPIT DURING THE LAST 15 NM OF THE ARR. THE PLTS AND CTLRS HAVE TO HAVE THE SAME INFO. UNLESS THE CTLR TELLS THE PLTS WHAT THEY ARE EXPECTING THE PLTS WILL OPERATE ON PAST EXPERIENCE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.