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 INFLIGHT. RESET WITH THE TRIP RESET BUTTON PUSHED IAW QRH. ACFT GROUNDED. PERFORMED FIM 36-10, TASK 801. FAILED STEP F.2.C. FOUND HIGH STAGE VALVE NOT CLOSING COMPLETELY. REMOVED AND REPLACED THE NR 1 ENGINE HIGH STAGE VALVE IAW AMM 36-11-06-000-801, AND AMM 36-11-06-400-801. OPS AND LEAK CHECKED GOOD.