B787 Dreamliner Undifferentiated or Other Model
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 100; Flight Crew Total 13000; Flight Crew Type 742
Confusion; Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation - Altitude Crossing Restriction Not Met; Deviation / Discrepancy - Procedural Clearance
Flight Crew Overcame Equipment Problem
Aircraft; Airport; Procedure
During the descent phase into LAX; on the GOATZ1 arrival; the FMS VNAV system would not work. Our first indication of this fact was that we never had a TOD when in the cruise phase. We were given a clearance to cross GOATZ at 16;000; but the FMS would not let us enter it; no matter what format we used. We also never had a Vertical Situation Display. We were then given a clearance to descend via the GOATZ1. Part of the distraction to us was the fact that the ATIS said that 25L; the normal runway we would be given from that direction; was closed. During the course of our arrival we were given at least four runway changes between runway 25L and 25R. During the arrival; due to the fact that I was flying the altitude restrictions using FLCH and V/S; we crossed DIRBY lower than 16;000 and BUFIE higher than 8;000.
[Report narrative contained no additional information.]
B787 flight crew reported FMS VNAV system malfunction on arrival; and using vertical speed to fly the STAR.