As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PRE-FLIGHT CREW NOTICED THE OVERHEAD EMERGENCY CEILING LIGHTS AT POSITION 1 & 3 WERE INOPERATIVE. GROUND MX CREW R & R THE EMERGENCY LIGHT BATTERIES. AN OPS CHECK PRODUCED SATISFACTORY RESULTS AND THE ACFT WAS RETURNED TO SERVICE.