As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED MAINTENANCE VISIT EMERGENCY LIGHTS WOULD NOT TURN OFF WHEN SELECTED TO OFF POSITION IN COCKPIT. LIGHTS WOULD ONLY REMAIN OFF IN ARM POSITION. EMERGENCY LIGHTING SYSTEM TROUBLESHOT. ALL 6 BATTERY PACKS, FLIGHT COMPARTMENT SWITCH, AND POWER CONTROL BOX WERE REPLACED. OPERATIONAL CHECK WAS GOOD. AIRCRAFT RETURNED TO SERVICE.