As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT BLEED TRIP OFF LIGHT ILLUMINATED. QRH TRIP RESET PROCEDURE SUCCESSFUL. REPLACED NR 1 ENG HIGH STAGE REGULATOR PER MM 36 11 07, NO HELP. ACCOMPLISHED ENG BLEED AIR SYSTEM HEALTH CHECK ON NR 1 ENG PER MM 36 11 00. FOUND HIGH STAGE VALVE BAD. REPLACED NR 1 ENG HIGH STAGE VALVE PER MM 36 11 06. ACCOMPLISHED REPAIR CONFIRMATION PER MM 36 11 00 ENG BLEED AIR SYSTEM HEALTH CHECK GOOD.