As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OPS CHK OF PAX OXYGEN CONTAINER OPENING FOUND OXYGEN LINE ABOVE MID LAVATORY (UNDER CEILING PANEL 251QC) NOT CONNECTED TO THE MAIN SUPPLY SYSTEM AND OXYGEN FLOW RELASED AT THIS LOCATION. THAT CAUSES THAT THE MID LAVATORY OXY CONTAINER DOESNT OPEN. B1 AND CUSTOMER INFORMED.