As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN DE-PRESSURIZED DURING DECENT OUT OF FL290, CABIN ALTITUDE REACHED 13800FT. OPERATIONAL CHECK OF THE PRESSURE CONTROL AND MONITORING SYS ACCOMPLISHED FOR CPC 1 AND CPC 2 IAW AMM 21-31-00-710-002A. BOTH CPC 1 AND CPC 2 CHECK NORMAL.