As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN`S OXYGEN MASK LEAKS. R & R THE OXYGEN BOX IAW AMM 35-11-15. LEAK CHECKED GOOD. OK FOR SERVICE. SWAPPED THE CAPTAIN`S OXYGEN MASK INTO OBSERVERS SEAT. R & R OBSERVER`S OXYGEN MASK IAW AMM 35-11-12. OBSERVERS SEAT OK FOR SERVICE.