As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - FL 560 - ON PREFLIGHT COCKPIT CHECK, CREW REPORTED LOW LEVEL TRACK LIGHTING AND EMERGENCY LIGHTS INOP THROUGHOUT CABIN. MAINTENANCE REPLACED THREE BATTERY PACKS IN THE FORWARD AND AFT SECTIONS OF THE CABIN. OPS CHECK GOOD. REFERENCE USAASB96177.