As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE SERVICING CREW O2, DISCOVERED HISSING SOUND BEHIND ACCESS PANEL 231AZ. SUSPECT LARGE CREW O2 LEAK. (FILED OPEN) UPON INSPECTION, FOUND CRACK IN OXYGEN FILL LINE TO O2 BOTTLE. REMOVED AND REPLACED CREW 02 BOTTLE FILL LINE, OPS AND LEAK CHECK GOOD AT THIS TIME. WORK DONE IN REFERENCE TO AMM 35-13-01.