As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING NORMAL OPERATION THE EMERGENCY EXIT LIGHTS WITH THE SWITCH IN THE ARM POSITION. LIGHT DISAGREES WITH ARM SWITCH POSITION. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT (14WK) IAW AMM 33-51-38. OPERATIONAL CHECKED SATISFACTORY. AIRCRAFT WAS GROUNDED.