Flight Crew Air Transport Pilot (ATP)
Confusion
Aircraft Equipment Problem Less Severe; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Overcame Equipment Problem; Flight Crew Returned To Clearance
Aircraft
Loaded the STAAV6 departure during preflight. Noticed waypoint TRALR did not load. Since this point was on the published SID and listed as a point in the release I added the point. While flying the SID as we passed waypoint STAAV enroute to waypoint TRALR the aircraft started a right turn indicating it was 3.5 miles left of course. I directed the FO to manually fly the AC to TRALR which he did. The FMC did not recognize TRALR as a fly to point even though it was depicted on the NAV display directly in front of us; instead it was navigating to NICLE the next point after TRALR. I questioned LA Center if there has been any problems with aircraft flying over TRALR on the SID and he answered yes but didn't know why.It appears as some kind of FMC recognition problem with waypoint TRALR.Need to look into this waypoint FMC mix up. I really don't know what happened.
B767-300 Captain reported his FMC failed to navigate to TRALR on the STAAV6 departure out of LAX.