What was found
WHEN LEFT PACK TURNED OFF, NO PACK OFF LIGHT AND NO L PACK OFF EICAS MESSAGE. REPLACED LEFT PACK FLOW CONTROL PRINTED CIRCUIT CARD IAW AMM 21-51-09. OPS CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHEN LEFT PACK TURNED OFF, NO PACK OFF LIGHT AND NO L PACK OFF EICAS MESSAGE. REPLACED LEFT PACK FLOW CONTROL PRINTED CIRCUIT CARD IAW AMM 21-51-09. OPS CHECKED GOOD.