What was found
EMERGENCY EXIT SIGNS INCEILING AND ON DOORS 2 AND 3 - ALSO EMERG FLOORLTS AND SOME READING LIGHTS ALL FLICKERING CONTINUOUSLY DURING FLT AT CRUISE ALT, FOUND FAULT "EPSU(11WL)EXT L/DEU-B(300RH6)", SEAT MOUNTED LIGHTS 30-37,15-16, 19-20,23-24 INOPERATIVE. CEILING LIGHTS AT ROWS 17 & 27 INOPERATIVE. L3 DOOR EXIT LIGHTS ALSO INOPERATIVE. REPLACED BATTERY PACK OF EPSU 11WL