As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK EICAS ON CLIMBOUT DIDNT RESET. UPON AIRCRAFT ARRIVAL FOUND LEFT RAM AIR DOOR CLOSED. PERFORMED GROUND TEST PER FIM 21-50-F1-36A-421A,GROUND TEST FAILED &. FOUND THE FOLLOWING CODES 21-61631,21-61611. SUSPECT LT CABIN AIR COMPRESSOR INLET DEFLECTOR DOOR ACTUATOR FAULTY. REMOVED AND REPLACED L CABIN AIR COMPRESSOR INLET DEFLECTOR DOOR ACTUATOR REF. AMM B787-A-21-51-16-00A, OPS CHECK GOOD.