CREW OXYGEN SYSTEM - CREW OXYGEN MASK STOWAGE BOX UNIT - INSPECT/REPLACE. SERVICE RECOMMENDED NOT APPLICABLE - DUE TO VARIABLE NUMBER BULLETIN OF THE A/C YG006 MOS 19-JAN-2012 I4-DEC-2009 3609:52 AFL 879 SB 737-35A1126 CREW AND PASSENGER GASEOUS OXYGEN SYSTEMS - OXYGEN CYLINDER RECOMMENDED NOT APP