As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
OXYGEN BOTTLE BLEEDING DOWN WHEN CREW MASKS ARE PLUGGED IN. SUSPECTED MASKS, BUT DETERMINED QUICK DISCONNECT FITTINGS TANGS INSIDE STORAGE BOX WORN ENOUGH TO PREVENT A TIGHT CONNECTION. REPLACED FITTINGS WITH NEW DPB-150 TO RESOLVE ISSUE.