As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A GROUND INSPECTION, THE COCKPIT EMERGENCY LIGHT SWITCH FAILED. WHEN SELECTED TO THE ARM POSITION THE LIGHTS ARE ON AND WHEN SELECTED TO THE ON POSITION, THE SWITCH SPRINGS BACK TO THE ARM POSITION. MAINTENANCE REMOVED AND REPLACED THE EMERGENCY LIGHT SWITCH IAW ATR 72-JIC 33-51-07. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE.