As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW OXYGEN SYSTEM LOW. RECORD PRESSURE PRIOR TO SERVICING. FOUND O2 REGULATOR - TRANSMITTER LEAKING AT FILL PORT. REPLACED REGULATOR - TRANSMITTER. FOUND LOOSE B-NUT AT 1ST OBSERVER'S 02 BOX. SECURED LINE. SERVICED O2 TO 1890 PRIOR TO DEPARTURE.