As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLEED AIR UNAVAILABLE. AFTER DEICING ACCOMPLISHED POST DE-ICE CHECKLISTS, PER FCOM VOL 1. ENGINE RUN REQUIRED DUE TO ENTRY M1. PERFORMED BITE ON AIR SUPPLY CONTROL SYSTEM, IAW B767 AMM 36-23-00 AND FOUND NO FAULTS. SEE ENTRY M3 FOR ENGINE RUN. M3: PERFORMED IDLE ENGINE RUN, IAW B767 AMM 71-00-00. BLEED LIGHT REMAINED EXTINGUISHED. OPERATIONS CHECKS GOOD.