As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND 3 EACH PORTABLE O2 BOTTLES NOT CONNECTED TO O2 MASK. ONE IN FRONT HAD CANNULA STRAPPED TO IT. THE TWO BACK HAD NO MASK CONNECTION AND GREEN ELBOWS WERE ALL INSTALLED BACKWARDS. INSTALLED AND CORRECTED ALL DISCREPANCIES ON PORTABLE O2 BOTTLES IN CABIN.