As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEAK ON SECOND OBSERVER CREW OXYGEN MASK AT COCKPIT. REMOVED SECOND OBSERVER CREW OXYGEN MASK P/N: MF10-05-11, S/N: 06700 ON UNSERVICEABLE CONDITION AT COCKPIT AS PER A320 FAM AMM 35-12-41-000-002-A. JOB IN PROGRESS. REPLACED SECOND OBSERVER CREW OXYGEN MASK (5760HM) P/N: MF10-05- 11, S/N: 06700 ON UNSERVICEABLE CONDITION BY NEW CREW OXYGEN MASKP/N: MF10-05-11, S/N: 103234 ON SERVICEABLE CONDITION AT COCKPIT AS PER A320 FAM AMM 35-12-41-000-002-A AND A320 FAM AMM35-12-41-400-002-A. (LP: 1751247, AIRCRAFT WAS GROUNDED)