Narrative:

On the riivr 2 arrival to lax; we were set up to intercept the 24R transition. About five miles from habso; we received a frequency change to sct and an immediate clearance to disregard the habso crossing restriction of 14;000 ft or above and to cross riivr at 12;000 ft as well as a hustle down advisory. We also got a slow down call due to heavy airbus traffic in front of us. Then; we received a runway assignment of 25L. I immediately reached into my flight bag to retrieve the 25L ILS approach plate while the pilot flying attempted to load the approach into the FMC. The FMC didn't take the approach so we transitioned to localizer data. It was at this point that approach called to ask if we were alright and apologized for the late change. I noticed we were at 34.2 DME and at 8;300 ft. Looking at the approach plate; we should have been at 9;000 ft at taroc. We were given another slow down from ATC and intercepted the approach profile at taroc. Visually we were lined up for 25L and at no time did we deviate from course more than about 3/4 of a dot. We were given numerous slow down calls until we were at 170 KTS and cleared for the approach. ATC also told us to look out for an airbus 380 going to 24R. They explained that this was the reason for the change and apologized. We should have had the approach plate for 25L readily available or even loaded into the FMC course since that is the expected runway for the riivr 2 arrival. We routinely receive clearance to 24R so that is what we loaded into the FMC. In the future; I will have 25L loaded with the 24R approach plate out for a deviation if that is what ATC tells us to fly. ATC could have given us a heads-up sooner about the traffic and the runway assignment; but if we had been set up differently their changes and timing wouldn't have affected us so much.

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Original NASA ASRS Text

Title: Air Carrier inbound to LAX failed to meet a crossing restriction when given a late change to the alternate runway complex. ATC indicating the an A380 on the Runway 24 Complex may have been a causal factor for the change.

Narrative: On the RIIVR 2 Arrival to LAX; we were set up to intercept the 24R transition. About five miles from HABSO; we received a frequency change to SCT and an immediate clearance to disregard the HABSO crossing restriction of 14;000 FT or above and to cross RIIVR at 12;000 FT as well as a hustle down advisory. We also got a slow down call due to heavy Airbus traffic in front of us. Then; we received a runway assignment of 25L. I immediately reached into my flight bag to retrieve the 25L ILS approach plate while the pilot flying attempted to load the approach into the FMC. The FMC didn't take the approach so we transitioned to localizer data. It was at this point that Approach called to ask if we were alright and apologized for the late change. I noticed we were at 34.2 DME and at 8;300 FT. Looking at the approach plate; we should have been at 9;000 FT at TAROC. We were given another slow down from ATC and intercepted the approach profile at TAROC. Visually we were lined up for 25L and at no time did we deviate from course more than about 3/4 of a dot. We were given numerous slow down calls until we were at 170 KTS and cleared for the approach. ATC also told us to look out for an Airbus 380 going to 24R. They explained that this was the reason for the change and apologized. We should have had the approach plate for 25L readily available or even loaded into the FMC course since that is the expected runway for the RIIVR 2 Arrival. We routinely receive clearance to 24R so that is what we loaded into the FMC. In the future; I will have 25L loaded with the 24R approach plate out for a deviation if that is what ATC tells us to fly. ATC could have given us a heads-up sooner about the traffic and the runway assignment; but if we had been set up differently their changes and timing wouldn't have affected us so much.

Data retrieved from NASA's ASRS site as of April 2012 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.