As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) LEFT BLEED DUCT WARNING DURING FLIGHT. COMPLIED WITH QRH. RT BLEED CLOSED CAUSING ULTIMATE LOSS OF PRESSURE. CREW INITIATED AN EMERGENCY DESCENT DUE TO THE LOSS OF CABIN PRESSURE, THE PASSENGER OXYGEN MASKS WERE RELEASED. INSPECTED LT BLEED DUCTS, FOUND HOT AIR SOV BOOT HALF OFF. R & R HOT AIR SOV, CLAMP AND BOOT.