As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW OXYGEN DROPPED FROM 1500-400 PSI IN 7 HOURS(<P><SPAN STYLE="COLOR: BLACK;">LEAKING B-NUT FITTING FOUND AT REGULATOR AND RETORQUED IAW AMM 20-51-01, NO CHANGE IN O2 PRESSURE IN 7 HOURS. ULTRASONIC LEAK CHECK COMPLETE, NO LEAKS NOTED. A/C PRESSURIZED, NO LEAKS NOTED.</SPAN></P>)