What was found
FLT#161, JFK-SMF. ' LH OVERWING EMERGENCY EXIT LIGHT INOP ( INTERIOR AND EXTERIOR EMERGENCY LIGHTING SYSTEMS (WITHOUT PASSENGERS) ); REMOVED AND REPLACED BATTERIES ON EPSU 10WL, 11WL, 12WL, 13WL. REPLACED ESPU 11WL. IAW AMM 31-51-38. OPS CHECKED GOOD ON GROUND, BITE TEST GOOD. MX-4 UPDATED, MCC NOTIFIED. THIS CLEARS THIS MDDR.'