As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 951- PRESS - FLOW LIGHT IN CRUISE. DURING DESCENT PRESSURIZATION COULD NOT KEEP UP. AT 10,000 FEET AIRCRAFT WAS COMPLETELY DEPRESSURIZED UNTIL LANDING. CORRECTIVE ACTION: REPLACED LEFT PRESSURE REGULATING VALVE AND LEFT A/C PILOT PRESSURE REGULATOR. (LP4865452)