As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN EMERGENCY LIGHTS DID NOT EXTINGUISH DURING THE ENTIRE FLIGHT WITH THE EMER LT SWITCH IN THE ARM POSITION. AFTER LANDING WITH MAIN BATT 1/2 OFF ALL EMERGENCY LIGHTS BEGAN TO FLICKER UNTIL EMER LT SWITCH TURNED OFF. CORRECTIVE ACTION; REMOVED AND REPLACED BOTH EMERGENCY BATTERIES AND REPLACED WITH TEST UNITS. PERFORMED OPS CHECK OF BATTERY AND LIGHTS AS REQUIRED, NO DEFECTS NOTED. REF. AMM 33·52-01. OKAY TO CONTINUE.