As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L PACK TEMP ON EICAS - L PACK CURRENTLY IN "N STBY". LEFT PACK WILL NOT TURN OFF, NO EICAS MESSAGE OR PACK OFF LIGHT.(<P>TRANSFERRED TO MDDR #154085. PLACED ON MEL 21-51-03-02. CAT C . DUE DATE 05OCT21 PLACARDS INSTALLED. MCC NOTIFIED.</P> / <P>LP 1314107 - HHN: REMOVED AND REPLACED L/H PACK FLOW CONTROL AND SHUTOFF VALVE. BITE AND OPS TEST GOOD IAW B767 AMM 21-51-01-004/404. THIS CLEARS MDDR 154085, PLACARD REMOVED.</P>)