What was found
INFLIGHT CREW OXYGEN PRESSURE DROPPED TO ZERO PSI IN CRUISE. REPLACED CREW OXYGEN CYLINDER AND FIRST OFFICER OXYGEN REGULATOR. SYSTEM GROUND CHECKED NORMAL OPERATION.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
INFLIGHT CREW OXYGEN PRESSURE DROPPED TO ZERO PSI IN CRUISE. REPLACED CREW OXYGEN CYLINDER AND FIRST OFFICER OXYGEN REGULATOR. SYSTEM GROUND CHECKED NORMAL OPERATION.