What was found
FLIGHT READINESS CHECKLIST (ADDED BY EC0500-01365) PROCEDURE - EMERGENCY PROXIMITY LIGHTS INOP AT SEATS ROWS 12, 15 AND 21. TROUBLESHOT EMERGENCY LIGHTS SYSTEM PER FIM 33-50 TASK 801. REF WDM 33-51-21-909, ROWS 12, 15 AND 21 ARE POWERED BY BATTERY PACK M1669. REPLACED FUSE ON BATTERY PACK IAW AMM 33-51-96-960-804 AND RELAMPED EMERGENCY PROXIMITY SWITCH IAW AMM 33-51-11-960-801. OP CHECKS NORMAL, OK TO CONTINUE.