As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL CABIN EMERGENCY LIGHTS WORK CORRECTLY WITH AIRCRAFT BATTERY SWITCH ON. TURNING AIRCRAFT BATTERY SWITCH TO OFF, ALL FORWARD EMERGENCY LIGHTS ARE INOP. THE REAR EMERGENCY LIGHTS WORK CORRECTLY WITHOUT AIRCRAFT BATTERY SWITCH ON. CORRECTIVE ACTION: REPLACED FWD EMERGENCY LIGHTING BATTERY. BATTERY TESTED GOOD IAW CE-560XLS AMM 33-50-01.