As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT SWITCH IN ARMED POSITION WITH BATTERY SWITCH OFF DOES NOT ILLUMINATE LIGHTING. REMOVED AND REPLACED NR 1 EMERGENCY LIGHTS BATTERY PACK, IAW CE 680A AMM 33-50-06. CHARGED UP ALL EMERGENCY LIGHTS BATTERY PACKS AND PERFORMED EMERGENCY LIGHTS OPERATIONAL CHECK, IAW CE-680A AMM 33-50-00. SYSTEM OPERATIONS CHECKS GOOD, NO DISCREPANCIES NOTED AT THIS TIME.