As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENG BLEED OFF EICAS MSG AFTER STARTING #1 ENGINE. ACCOMPLISHED 227 NNC AND ADVANCED THRUST TO 78% N2 DID NOT RESOLVE THE ISSUE. CREW RETURNED TO THE GATE (BTB). MTC PERFORMED AIR SUPPLY BITE IAW B767 AMM 36-11-00 NO FAULTS NOTED AT THIS TIME L ENG BLEED OPERATES AS REQUIRED A/C REMAINS ETOPS 180. A/C RETURNED TO SERVICE.