As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3830 -PRESS- CREW REPORTED LOSS OF CABIN ALTITUDE ON DESCENT APPROX. 23K FEET. PERFORMED EMERGENCY DESCENT TO BELOW 10,000FT. CORRECTIVE ACTION: MAINTENANCE REPLACED BOTH RIGHT HEAT EXCHANGERS, RIGHT PACK ACM AND RIGHT FLOW CONTROL VALVE.