As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX CREW REPORTED LOSS OF CREW OXYGEN PRESS. EMERGENCY DECLARED FLIGHT LANDED PHX WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. REPLACED CAPTAIN`S & FIRST OFFICER`S DEMAND REGULATORS THAT WERE LEAKING. SYS GND CHECKED NORMAL, OPERATION CLOSED.