As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3944 -PRESS/DE- DECLARED EMERGENCY DUE TO UNABLE TO MAINTAIN CABIN PRESSURE ON RIGHT PACK. LEFT PACK ON MEL. CORRECTIVE ACTION: REPLACED RIGHT PACK STANDBY TEMP CONTROL VALVE AND LEFT PACK FLOW CONTROL VALVE. BOTH PACKS PASS SINGLE PACK CONFIDENCE CHECKS. OPS CHECK GOOD.