What was found
MAIN EXIT SIGN/LIGHT: IN FLIGHT NOTICED MAIN CABIN DOOR EXIT SIGN ILLUMINATED WITH PAX SAFETY SWITCH OFF. AFTER LANDING AND SHUTDOWN MAIN CABIN DOOR EXIT LIGHT REMAINED ILLUMINATED WITH ALL SWITCHES AND BATTERY OFF. // SIGNOFF// TROUBLESHOT TO #1 EMERGENCY BATTERY PACK UC019. REMOVED #1 EMERGENCY BATTERY PACK P/N:CBS28-1, S/N:3337M AND INSTALLED REPAIRED P/N:CBS28-1, S/N:6843M IN ACCORDANCE WITH CE-680A MM 33-50-06. COMPLIED WITH EMERGENCY LIGHTING SYSTEM OPERATIONAL CHECK IN ACCORDANCE WITH CE-680A MM 33-50-00. OPERATIONAL CHECK GOOD. NO DEFECTS NOTED AT THIS TIME