As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERSION AT FL350 THE CABIN ALT WARNING HORN SOUNDED CABIN ALT APPROXIMATELY 11K EMERGENCY DESCENT - CABIN ALT NEVER EXCEEDED 12K'. HOT AIR SUPPLY DUCT BOOT IN RT A/C BAY FORWARD WALL PARTIALLY OFF FLANGE, LEAKED. R & R LT SUPPLY DUCT CHECK VALVE IAW MM.