As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS L ENG BLEED OFF. T/S PER FIM 36-10. VISUALLY CHECK PRSOV, NO LEAK NOTED. RESEATED ECS BLEED LT CONFIG CARD. RAN ENGINE. OPS CHECK NORMAL. LT PACK OPERATION NORMAL. REPLACED LT ENG BLEED CARD IAW MM REF 36-10 GRND OPS OF BLEED SYSTEM GOOD AT THIS TIME. R&R LT ENG REVERSE FLOW CONTROL VALVE IAW MM REF 36-11, GROUND OPS CK GOOD.