What was found
FIRST OFFICER`S OXYGEN HARNESS FAILED TO INFLATE. SWAPPED F/O`S MASK WITH OBSERVERS MASK . CHECKED OK. REPLACED OBSERVERS MASK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FIRST OFFICER`S OXYGEN HARNESS FAILED TO INFLATE. SWAPPED F/O`S MASK WITH OBSERVERS MASK . CHECKED OK. REPLACED OBSERVERS MASK.