What was found
O2 MASK DID NOT DROP ROWS 38DEF LOCKED BY TOMC FOR MAINT FERRY FLT. TOMC UNLOCKING AFTER FERRY. REFER TO LOG PAGE # 8716015 FOR O2 GENERATOR INSTALLATION, ACTIVATION AND OPERATIONAL CHECK REF LP 8715956 AUTO FAIL PRESSURIZATION UNCONTROLABLE ABOVE FL250 O2 MASKS DEPLOYED FOUND THAT ALL CABIN OXY GENERATORS WERE FIRED, WILL REQUIRE TO REPLACE THEM. RE-PACKED MASKS ON LAV A, T, D AND E. ALL 4 OXYGEN BOX DOORS LEFT ON THE TEST POSITION. MASKS AND OXYGEN GENERATOR AT R1 INSPECTED AND DEEMED SERVICEABLE, RE-PACKED MASKS, IAW AMM 35-22-31-420-801-001. OXYGEN BOX DOOR LEFT IN THE TEST POSITION. CLEANED AND RESTOWED CABIN O2 MASK FOR FERRY FLT PER AMM 35-22-31-440-801. O2 GENERATORS STILL REQUIRE REPLACEMENT AND MASKS LANYARDS ATTACHED TO FIRING LANYARD AFTER O2 GEN REPLACEMENT. REMOVED & REPLACED ALL CABIN PSU OXYGEN GENERATORS IAW AMM 35-22-11 UPTO AND INCLUDING STEP G(2) PAGE 4.