As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MEDICAL OXYGEN CYLINDER LEAKED OUT AND DEPLETED. PROBLEM HAS BEEN ISOLATED TO CONTROL CIRCUITRY FOR THE OXYGEN PULSE LATCHING VALVE. MFR REPORTED THAT A CONTINUOUS ON POWER SIGNAL WOULD CAUSE THE VALVE TO CHATTER, RELEASING OXYGEN SLOWLY FROM THE CYLINDER UPSTREAM OF THE VALVE.