As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CABIN CREW TRAINING THE EMERGENCY LIGHTS WERE ACTIVATED AND THE ARM LIGHT FAILED TO ILUMINATE. MAINTENANCE REPLACED THE BULB AND THE SYSTEM TESTED, OK. NO EMERGENCY ACTION WAS TAKEN AS THIS WAS AN ON GROUND TRAINING. AIRCRAFT WAS RELEASED FOR SERVICE. (K)