As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 665 - EN ROUTE FROM CLT-PBI, AT FL350, THE CABIN ALTITUDE WARNING HORN SOUNDED. CABIN ALTITUDE WAS AT 10,000 FEET AND CLIMBING. CAPTAIN DECLARED AN EMERGENCY, DESCENDED THE FLIGHT TO 10,000 FEET AND REGAINED CONTROL OF CABIN WITH MANUAL DC. FLIGHT RETURNED TO FIELD AT CLT AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE AFT OUTFLOW VALVE. OPERATIONAL CHECK GOOD PER MM 21-31-11. (M)