As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW O2 LEVEL AT ZERO IN FLIGHT DECK. (OXYGEN PRESSURE INDICATOR; FLIGHT DECK CREW OXYGEN INDICATOR). ACCOMPLISHED FAULT ISO MANUAL FIM 35-1 TASK 804. NO FAULTS FOUND OK FOR SERVICE THIS CLEARS MEL 35-3-1 MDDR 138901. REMOVED PLACARDS.