As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT AND AFTER START CHECKLIST, L PACK OFF EICAS DISPLAYED QRH PROCEDURE UNSUCCESSFUL. AIRCRAFT RETURNED TO BLOCKS (BTB). TRANSFERED LH PACK TO DI IAW ABX MEL 21-51-1-1. MX PROCEDURES ACCOMPLISHED PLACARD INSTALLED A/C RELEASED NO ETOPS PLACARD ROTATED MBCB: 02/16/2026. AIRCRAFT RETURNED TO SERVICE.