As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT OXYGEN LOW ON PREFLT. REPLACED BOTTLE 1700PSI. DECREASE AT 240PSI PER HOUR FOUND LEAK AT CONNECTION TO CAPT''S STOWAGE BOX & ALSO AT CONNECTION TO 2ND OBSERVERS STOWAGE BOX. CONNECTION TIGHTENED-RECHECKED NO LEAKS. CREW O2 BOTTLE REPLACED & CHECKED FOR LEAKS PER AMM 35-11-00. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1320298 SN OFF 0057 BOTTLE, OXY, AI OFF 29-3511-9-9001 0057 ON 29-3511-9-9001 8764.