What was found
EPSU BATTERY (13WL) FAILED ON EMERGENCY LIGHTNING CAPACITY TEST AND REQUIRES REPLACEMENT. RECORDED ON LTPR NR#5001249498-0010. BATTERY REPLACEMENT OF (13WL) PERFORMED IAW AMM:33-51-38-000-002 & 33-51-38-400-002 REV 120. TEST SATISFACTORY. REMOVED PART INFO P/N:AD-3214-31, S/N:289191, INSTALL PART INFO: P/N; AD-3214-31, S/N:287043, RECORDED ON LTPR NR#5001249498-0010.