What was found
EPSU BATTERY (11WL) FAILED ON EMERGENCY LIGHTNING CAPACITY TEST AND REQUIRES REPLACEMENT. RECORDED ON LTPR NR#5001249494-0010. BATTERY REPLACEMENT OF (11WL) 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:289187, INSTALL PART INFO: P/N; AD-3214-31, S/N:282997, RECORDED ON LTPR NR#5001249494-0010.