As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL APPROACH, O2 PASS OXY ON MST CAUTION LIGHT ON AND OXYGEN MASKS DEPLOYED. RESTOWED AND CLEANED THE PAX OXYGEN MASK IAW 35-21-09 ALL CHECKED GOOD. REPLACED PIN IAW ESPM 20-16-00. R & R PCB4 IN JB10 IAW 24-05-09 ALL CHECKED GOOD. R & R CPCP IAW 21-33-01, CHECKED GOO.