What was found
ACCOMPLISHING THE LAVATORY O2 REACTIVATION IAW AD 2012-11-09 & WHEN THEY ACCOMPLISHED THE CHECK OF THE MASK DROP, 12 ROWS DID NOT WORK AS WELL AS 3 LAVATORIES. THE ROWS THAT DID NOT DROP ARE AS FOLLOWS, 40 ABC, 33 ABC, 24 ABC, 23 ABC, 10 ABC, 9 ABC, 24 DEF, 12 DEF ALONG WITH LAVATORY A, PB. REPLACED O2 DOOR SOLENOIDS. OPERATIONS CHECKED IAW EA 3520-01-329 REV G.