As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SECOND OBSERVER CREW OXYGEN MASK STOWAGE BOX OPERATIONAL CHECKED FAIL. STOWAGE BOX FOUND LEAK DURING DOOR OPENED. SECOND OBSERVER CREW OXYGEN MASK AND BOX REPLACED AND CHECKED NORMAL PER AMM 35-11-18. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1454302 S/N OFF 00072 MASK, OXYGEN, C OFF 99-3512-9-9001 0072 ON 99-3512-9-9001 7828.