What was found
DUE REPEAT LOW CREW O2 AND FREQUENT SERVICING REF L/P 6294900, 6314977 & 6314977 PLAN PERFORMING FIM TASK B787-A-35-10-F1-01A-421A-A FOR CREW OXYGEN LOW MESSAGE. INSURE CREW O2 PRESSURE INDICATION SYSTEM OPERATES NORMAL. NOTE: PRIOR SERVICING- MAKE SURE BOTTLES WHERE INSTALLED AND VALVES OPENED CORRECTLY. SERVICE BOTTLES FULL PER AMM 12-15-08-00B-200A-A AND PERFORM LEAK TEST REF 35-11-00-18A-364A-A. PLEASE ADVISE TOMC OF FINDINGS AND STATUS BEFORE RELEASING FOR NEXT FLIGHT, CARRIED BY ELB PREFORMED LEAK CHECK. FOUND LEAK AT SUPPLY LINE FITTING (HARD LINE CONNECTED TO QUICK DISCONNECT LINE). SECURED FITTING AND REPLACED BOTH O2 BOTTLE DUE TO BOTH BOTTLES DEPLETING TO ZERO. OPS CHECKED O2 SYSTEM, NO FURTHER LEAKS FOUND. REF AMM 12-15-08-00B-200A-A, 35-11-00-18A-364A-A. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1992050 SN OFF 1563 TT # 1950364 SN OFF 1563 IPC REFERENCE # IPC 35-11-00 IPC REFERENCE # IPC 35-11-00 CYLINDER, OXYGE OFF 79-3514-9-9001 1563 ON 79-3514-9-9001 0352 PARTS CHANGE UPDATE MFG P/N OFF 4441295-115 MFG S/N OFF 01612 MFG P/N ON 4441088-115 MFG S/N ON 00144 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1950364 SN OFF 1982 CYLINDER, OXYGE OFF 79-3514-9-9001 1982 ON 78-3514-9-9001 0144