What was found
SEAT 2AB OXYGEN CONTAINER BOX DOOR WILL NOT LATCH CLOSE. REPLACED SEAT 2AB O2 CONTAINER & PERFORMED DROP TEST. SEATS 6ABC, 12ABC, 18ABC, 19ABC, 21ABC, 25ABC, 3DEF, 6DEF, 8DEF, 24DEF AND 26DEF WOULD NOT DEPLOY WHEN TESTED. RESET & TRIED MULTIPLE TIMES WITH NO CHANGE. REPLACED SWITCH 14WR. PERFORMED O2 DROP TEST-FOUND 21ABC & 7DEF DOOR LATCH DID NOT RELEASE. FOUND 7DEF TO OPS CHECK NORMAL AFTER ADJ DOOR. 21ABC SOLENOID OPS CHECKS NORMAL BUT WASN' T SECURE TO MASK BOX. REPLACED MASK BOX AT 21ABC. OPS CHECKED ALL MASK DROPS. ALL MASKS DEPLOYED NORMAL, INCLUDING F/A AND LAVS.