What was found
O2 MASK FELL IN FWDLAV UPON INSPECTION OF O2 MASK BOX OUTBOARD LATCH SPRING AND ROD GUIDE IS BROKEN AND ROD IS BENT. UNABLE TO LATCH O2 DOOR CLOSED IPC 35-21-01-01E, ITEM 10Z, 10T. PN 807894-214 (M&E 31-3512-3-0004)BOTTLE. PN AH5702-51-U1 (M&E 31-3512-3-0014)CONTAINER. EA 3520-01316 PICS OF O2 GEN AND BOX ADDED. REMOVED LAV EMER GEN CONTAINER REF AMM 35-21-41-000-001. INSTALLED NEW COVER AND ACTUATOR REF CMM 35-21-74 . INSTALLED CONTAINER REF AMM 35-21-41-400-001-A. STEP G. NEED TO VERIFY SAFETY PIN REMOVED. VERIFIED BOTTLE IS SECURELY MOUNTED/POSITIONED PROPERLY, THAT THE SAFETY PIN / SAFETY HAIRPIN IS REMOVED. ALSO THAT THE BOTTLE HASN'T BEEN DISCHARGED AND THAT THE RELEASE PIN/ LANYARD IS PROPERLY LOCATED REF GMM 09-10-05 RESET CB. ACCOMPLISHED OPERATIONAL CHECK REF AMM 35-23-00-710-001-A. OPS CHECK GOOD.RESET SYSTEM. FLAGGED SDR, BOX WAS INSTALLED UPSIDEDOWN.