Medium Large Transport; Low Wing; 2 Turbojet Eng
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Issued New Clearance; Flight Crew Returned To Clearance; Flight Crew Became Reoriented; Flight Crew Requested ATC Assistance / Clarification
Procedure
PNF read back 25 left and switched MCDU to fly 25 L ILS transition after River. Approach advised that we should be on 24L around TAROC at approx. 8500 feet. And issued vector to join 24 left procedure which we complied with immediately. I believe this was a readback / hearing mix-up. Could also have been an ATC error. I didn't specifically recollect hearing the change to 25left that the FO read back. I try to make a habit of asking the PNF to query clearances if I don't hear them clearly. Very little traffic this particular evening and I just didn't catch it. No loss of separation and when advised to change to the 24 left path we complied immediately. In short... If you don't clearly here a clearance and your flying partner advises what he or she heard... That is always a good time to ask for a verification.
While on the RIIVR2 STAR and upon initial contact with SOCAL APP they cleared us for the ILS 25L upon reaching RIIVR. We had 24L already loaded so I switched the approach to 25L and entered the new CAT 1 min into the Baro field. Shortly after RIIVR SOCAL said 'it looks like you're lined up with 25L'; I said 'yes we are as that's what you cleared us for and I read back that clearance'. He said 'no problem turn 10 degrees right intercept 24L maintain 7000 till established cleared ILS 24L'. We complied with the instructions and I re-entered the 24L approach in the MCDU as well as the new Mins into the Baro field again. We landed without further complications! I could've questioned ATC after the initial clearance of ILS 25L as we were set up for 24L since it makes more sense to land 24L based on our gate assignment. Instead I just responded to the clearance of ILS 25L and acted accordingly as stated above. Even though ATC did say 25L initially I'll make sure to query them next time to so we're all on the same page.
SCT Approach control cleared flight crew for approach to LAX Runway 25L. Then advised that clearance was actually to Runway 24L and reissued the approach clearance.