What was found
FOUND 13 VARIOUS ROWS O2 DOORS WILL NOT DEPLOY. RESET TRIED SEVERAL TIMES WITH SAME RESULTS. MOVING TO HANGER TO T-S. REPLACED SEAT 2AB O2 CONTAINER AND PERFORMED DROP TEST. SEATS 6ABC, 12ABC, 18ABC, 19ABC, 21ABC, 25ABC, 3DEF, 6DEF, 8DEF, 24DEF, AND 26DEF WOULD NOT DEPLOY WHEN TESTED. RESET AND TRIED MULTIPLE TIMES WITH NO CHANGE. REPLACED SEAT 1AB-2AB O2 MASK CONTAINER AND OPS CHECKED ALL MASK DROPS. ALL MASKS DEPLOYED NORMAL, INCLUDING FLIGHT ATTENDANTS AND LAVS.