As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW SUSPECTED O2 LEAK DUE TO O2 QUANTITY DECREASING APPROX 10 PSI PER 20 MIN DURING FLIGHT. AHM SHOWED CREW O2 LOW MESSAGE.(<P>VERIFIED NO CREW O2 LEAKS AND PRESSURE CHECK OKAY AT 1720 PSI. TRANSFER INDICATION TO MDDR #228611 PER MEL 35-11-02 CAT C DUE 14APR25. C/W MX ACTION.</P> / <P>REMOVED AND REPLACED UPPER CREW SYSTEM PRESSURE TRANSDUCER IAW AMM 35-41-08. OPS AND LEAK CHECK GOOD. DMI 228611 CLEARED.