What was found
DURING INSPECTION THE EMERGENCY LIGHT SYSTEM FAILED TEST. MAINTENANCE REMOVED AND REPLACED THE AFT EMERGENCY POWER SUPPLY UNIT (13WL), OPERATIONAL TEST WAS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING INSPECTION THE EMERGENCY LIGHT SYSTEM FAILED TEST. MAINTENANCE REMOVED AND REPLACED THE AFT EMERGENCY POWER SUPPLY UNIT (13WL), OPERATIONAL TEST WAS GOOD.