As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN INSPECTING THE P/N AND S/N OF THE OXYGEN GENERATORS, THE OXYGEN GENERATOR OF ROW 43 DEF WAS FOUND ACTIVATED. (ST NR 70848). O2 GENERATOR AT ROW 43 DEF REPLACED PER AMM 35-21-04-404-013 ON ST ENGINEERING N/R 70848 PARTS USED: 29-3522-3-0010,QTY :1