As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND EVIDENCE OF SPENT OXYGEN GENERATOR AT ROW 23 SEATS ABC. DEFFERED PER MEL SEATS USEABLE. TEMPORARILY SECURED NEW GENERATOR IN MOUNTING CLAMP. ALL 4 O2 MASKS WERE REMOVED FROM THE AIRCRAFT. 4 NEW MASKS ON AOG S2057. NEW MEL REFERENCE IS 3521A. SEATS 23ABC ARE NOT USEABLE. 14JUL ORD INF- :THE FOUR AOG'D MASKS WERE PLACED IN THE COCKPIT DUE TO AC GOING OTS TO THE HANGAR. RE-INSTALLED (4 )MASK AND OXYGEN GENERATOR AT SEAT LOCATION 23-ABC, IAW MM.