As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT EMERGENCY LIGHTS WOULD RANDOMLY FLICKER ON & OFF. R&E CHANGING BATTERY AND CHARGER AT THIS TIME. ACFT INBOUND CREW REPORTED THAT AFT EMERGECY LIGHT WOULD BLINK OFF & ON, & THEN BACK OFF AT ABOUT THE TIME OF DISARMING THE DOORS DID NOT SEE ANY BLINKING DURING FLIGHT. EPLACED 13WL EPSU AND BATTERY REF AMM