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MD11 flight crew reports being cleared for the SEAVU2 arrival to the ILS 25L at lax and the FMC is programed accordingly. Crossing seavu it suddenly became apparent that the active waypoint was not appropriate for the ILS 25L approach appearing to be the ILS 24L instead. The crew quickly corrects the FMC just as sct takes notice of the track deviation. The captain may have accidentally switched the secondary flight plan in the FMC.

Narrative:

Captain flying. Captain built the ILS 25L approach in the FMS and briefed it. First officer (pilot monitoring) reviewed active flight plan point by point with constraints for seavu arrival to ILS 25L into lax. Crew was cleared to descend via seavu arrival and cleared for ILS 25L approach. Crossing seavu it suddenly became apparent that the active waypoint was not appropriate for the ILS 25L approach appearing to be the ILS 24L instead. Crew worked together to reinsert the correct approach and made correction back to appropriate course. At that point the data tag indicated the aircraft was 1.1 nm right of course. At the same time the crew made turn back to course; la approach controller inquired; 'are you correcting back to course for ILS 25L approach?' we responded in the affirmative; continued the approach and landing without incident. The captain admitted that at some point after the brief; he made FMS changes to the secondary flight plan and believed he accidently switched with the active flight plan with neither crew member recognizing the mistake.pilot flying accidently swapping secondary with active flight plan in fmsmore awareness and coordination on behalf of both pilots when FMS changes are made.

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Original NASA ASRS Text

Title: MD11 flight crew reports being cleared for the SEAVU2 Arrival to the ILS 25L at LAX and the FMC is programed accordingly. Crossing SEAVU it suddenly became apparent that the active waypoint was not appropriate for the ILS 25L approach appearing to be the ILS 24L instead. The crew quickly corrects the FMC just as SCT takes notice of the track deviation. The Captain may have accidentally switched the secondary flight plan in the FMC.

Narrative: Captain flying. Captain built the ILS 25L approach in the FMS and briefed it. First Officer (Pilot Monitoring) reviewed active flight plan point by point with constraints for SEAVU arrival to ILS 25L into LAX. Crew was cleared to descend via SEAVU arrival and Cleared for ILS 25L approach. Crossing SEAVU it suddenly became apparent that the active waypoint was not appropriate for the ILS 25L approach appearing to be the ILS 24L instead. Crew worked together to reinsert the correct approach and made correction back to appropriate course. At that point the data tag indicated the aircraft was 1.1 nm right of course. At the same time the crew made turn back to course; LA Approach controller inquired; 'are you correcting back to course for ILS 25L approach?' We responded in the affirmative; continued the approach and landing without incident. The Captain admitted that at some point after the brief; he made FMS Changes to the secondary flight plan and believed he accidently switched with the active flight plan with neither crew member recognizing the mistake.Pilot Flying accidently swapping secondary with active flight plan in FMSMore awareness and coordination on behalf of both pilots when FMS changes are made.

Data retrieved from NASA's ASRS site 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.