As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALT WARNING AT FL 410 PRESSURIZATION KEPT CLIMBING UPON ARRIVAL FOUND AT THE RIGHT FWD A/C BAY A DUCT DETACHED FROM THE CABIN AIR SUPPLY CHECK VALVE. VALVE INSPECTED AND FOUND GOOD. REINSTALLED DUCT TO CHECK VALVE AND SECURED IAW AMM 21-51- 15. ADDITIONAL FINDING OF EQUIPMENT COOLING OVERBOARD EXH VALVE FAILURE OPEN AND REPLACED. A/C WAS PRESSURIZED USING APU AND ENG BLEEDS IAW AMM 05-51-24 CABIN LEAKAGE CHECK WAS ACCEPTABLE PER FIG 203 NO FURTHER DISCREPANCIES FOUND.