What was found
MDIS 965 35-20 5884 12DEC19 MEM FACT U FOUND #1 OXYGEN MASK STORAGE BOX IN THE PASSANGER COURIER AREA BUSTED. ALL OXYGEN LEAKED OUT OF THE TOP OF THE BOX. R/I 12DEC19 10:24 MEM U REASON CODE : FAILED OPS CK. & REPLACED WITH SERVICABLE UNIT OFF MPN: MF20-108 POS: 3JP SRL: 79508 TAG NBR: 792G87 ON MPN: MF20-108 CPN: 3510596 SRL: SE09844 TAG NBR: G58259 REMOVED AND REPLACED BOTH OXYGEN STORAGE BOX AND OXYGEN MASK. OPS CHECK AND LEAK CHECK GOOD. AMM 35-11-51-4-99. FACT 12DEC19 10:54 MEM U VERIFIED BOTH FWD AND AFT HIGH PRESSURE OXYGEN CYLINDERS ARE SAFETIED OPEN REF AMM 35-11-30 & 35-11-32. SEE WRI 35-01 5882 FOR P/N AND S/N VERIFICATION OF BOTH O2 CYLINDERS AFTER REPLACEMENT.