As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CMH-DIVERTED FLIGHT, CREW OXYGEN WAS LOSING PRESSURE IN FLIGHT. PRESSURE AT THE START OF THE FLIGHT WAS 1620 PSI AND HAD DROPPED TO 1100 PSI. THE FLIGHT DIVERTED TO CMH. IN CMH MAINTENANCE FOUND THE CAPTAINS OXYGEN MASK BOX LEAKING AT THE FLOOR CONNECTION. THE LINE WAS TIGHTENED AND LEAK CHECKED GOOD. THE OXYGEN BOTTLE WAS REPLACED WITH ONE FULLY SERVICED. NO FUTHER SERVICING HAS BEEN REQUIRED AS OF THIS DATE.