As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW OXYGEN WENT TO ZERO INFLIGHT. ACFT GROUNDED. INSPECTED OXYGEN BOTTLE, FOUND TO HAVE 40 PSI, SERVICED CREW OXYGEN BOTTLE TO FULL, NO DEFECTS NOTED. FINAL INDICATING PRESSURE IS 1580 PSI. DUE TO DISCREPANCY PERFORMED LEAK CHECK IAW AMM 35-00-00-790-801, NO LEAKS NOTED. SERVICED CREW 02 BOTTLE IAW AMM 12-15-21.