As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O OUT OF ORD, HEARD LOUD NOISE FROM NOSE OF AIRCRAFT. RH SIDE. ******AIRCRAFT REMOVED FROM SERVICE********* FOUND CREW O2 SERVICING DOOR OPEN ON ARRIVAL. VISUALLY INSPECTED DOOR AND LATCHES, NO DEFECTS AT THIS TIME. DOOR SECURES CLOSED.