As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW O2 FAULTY. THE CREW O2 WAS BELOW 1000PSI AT IAD SO IT WAS SERVICED TO 1625PSI. WE HAVE FLOWN A LITTLE OVER 6 HRS AND O2 SHOWS 1340PSI. IS THAT NORMAL OR SHOULD WE SUSPECT A LEAK. FOUND O2 LEAK AT BOTH IN-AND-OUT PORTS OF PX REGULATOR. REPLACED PACKINGS, PNR BACP11K5 A. ACP'D LEAK CHKS. SATIS. NO FURTHER LEAKS FOUND. SYS O2 PX NOW 1250 PSI.