As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE AT 24000 FT, CABIN PRESSURE EXCEEDED 10000. SCANNED PRESSURIZATION PANEL AND NOTED APU BLEED SWITCH WAS IMPROPERLY SET TO ON. ALL OTHER SWITCHES WERE SET PER MEL. BEGAN EMERGENCY DESCENT TO 10,000 RAN QRC THEN QRH. PACK PRESSURE STILL ABOVE 40 PSI LEFT SIDE. WITH FULL MANUAL CLOSED AT FLOW VALVE AIRCRAFT AT 900 CABIN AT 7,000 FEET. ACFT GROUNDED