As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AN A CHECK, WHILE PERFORMING THE EMERGENCY LIGHT TEST, DISCOVERED THAT THE LEFT OVERWING EMERGENCY ESCAPE LIGHTING PATH WOULD NOT TEST, THE 3 LEFT OVERWING EMERGENCY LIGHTS WILL NOT LIGHT UP DURING THE TEST. REPLACED BATTERY PACK. OPS CHECKED NORMAL.