As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CAPTAIN`S O2 MASK CAME DETACHED FROM HOSE WHILE STOWING MASK AFTER USE. CREW OXY PRESSURE DEPLEATED. HOSE TIED IN KNOT TO PREVENT COMPLETE LOSS. R & R CAPTAIN`S O2 MASK WITH SERVICEABLE ASSY. O2 MASK AND MIC CHECKED NORMAL. CREW O2 SERVICED.