Commercial Fixed Wing
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 200; Flight Crew Total 9152; Flight Crew Type 2026
Situational Awareness; Confusion; Human-Machine Interface
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Ground Incursion Taxiway
Air Traffic Control Provided Assistance; Air Traffic Control Issued New Clearance; Air Traffic Control Issued Advisory / Alert; Flight Crew Requested ATC Assistance / Clarification
Chart Or Publication; Manuals; Human Factors; Company Policy
Following pushback from our gate in Singapore we were given taxi instructions 'taxi R1; EP; hold short P5.' We all searched for P5 on the 10-9 and 10-9B charts (Jeppesen) but could not find it. The aircraft moving map matched the 10-9/10-9B charts. We queried ATC and they indicated taxiways were renamed and P5 was the old A4. After sorting out the confusion; we taxied straight out and turned onto EP. ATC informed us we actually taxied out on R2 instead of R1 (which also was not on the 10-9 chart since it was labeled B2 on the existing 10-9 and 10-9B charts). We verified that each of us had current updated Jeppesen publications. I noted the NOTAM indicating re-designation of taxiways was complete and assumed that since we had current charts; we had the current taxiway labels. After consulting with dispatch and [Chief Pilot]; it was pointed out that page 10-8A/10-8B discussed further this taxiway change and indicated the new labels. None of the crew noticed this page. I recommend an OPS Alert be issued for something like this. The NOTAM seemed straight forward but unless you also noticed page 10-8A/10-8B; the NOTAM could easily be misunderstood to mean our current pubs we updated with 10-9/10-9B showing the correct information. Had an OPS Alert been issued; I feel it is very unlikely we or any crew would make this mistake.
Air carrier First Officer reported the crew did not notice taxiway designator revisions in the Jeppesen charts causing confusion and a taxiway incursion.