As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW O2 AT 1550 PSI AND DROPPING. FOUND LOOSE B-NUT. FOUND AND REPAIRED THREE LEAKS ON HIGH PRESS SIDE. REPLACED 90 DEGREE ELBOWS AT BOTH ENDS OF HARD LINE FROM CROSS FITTING TO FILL VALVE. SECURED LEAKING B-NUT AT CROSS FITTING TO STEP DOWN REG SVCED SYSTEM. OPENED AND SAFTIED BOTTLE VALVE. SYSTEM WAS SERVICED TO 1800 PSI & RECHECKED WITH NO LOSS OF PRESSURE FOUR HOURS LATER.