As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK OFF EICAS MESSAGE AND ASSOCIATED PACK OFF DISCRETE LIGHT. ACCOMPLISHED LEFT CONTROLLER BITE TEST AND NO FAULTS RECORDED. PER COMPANY CONVENIENCE REMOVED AND REPLACED LEFT FLOW CONTROL AND SOV PER AMM 21-51-01 POST INSTALLATION CHECKS GOOD.