What was found
DURING UPPER DECK DOOR EMER SYS OPERATION, FOUND BOTH UPPER DECK BATTERY OK LIGHT NOT ON. IAW WDM 52-21-13, 52-21-23 REV 40, PFM WIRING CONTINUITY CHECK FROM BATTERY MODULE TO UPPER DECK DOOR MODULE, RESULT WAS SATISFACTORY. IAW AMM 52-23-14-004-001 & 52-23-14-404-005 REV 86, REPLACED BOTH UPPER DECK DOOR BATTERY PACK & INSTALLATION TEST, RESULT WAS SATISFACTORY.