What was found
SHIP 9552 -MISC- REFERENCE LOG PAGE #5879904 ABOUT A RAPID DECOMPRESSION EVENT. MASKS AT SEAT ROWS 11C, 18A, 19C, 21C, 24C, 25A, 29A, & AFT F/A SEAT DID NOT DROP DURING THE ODI EVENT. MAINTENANCE FORWARDED THE O2 SYSTEM TO MEL 35-21-01A. "M" PROCEDURES COMPLIED WITH. PLACARD INSTALLED. OK FOR SERVICE. (LP #5879911)