As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN PRESSURIZATION WAS UNCONTROLLABLE. PAX MASKS DEPLOYED. FOUND CLAMP MISSING FROM BOOT ON APU BLEED AIR DUCT LOCATED IN MLG WHEEL WELL KEEL BEAM. INSTALLED APU BLEED AIR DUCT CLAMP PER AMM 36-14-02. REFERENCE LOG PAGE 8036986 FOR AIRCRAFT CABIN PRESSURE DECAY CHECK.