As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - DURING SCHEDULED PS-2 CHECK MAINTENANCE REPORTED SEVERAL EMERGENCY LIGHTS IN CABIN TO BE INOPERATIVE. MAINTENANCE FOUND TWO EMERGENCY LIGHT POWER SUPPLY UNIT BATTERIES TO HAVE LOW VOLTAGE. MAINTENANCE CHANGED ALL FOUR BATTERIES. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. RED SIMA20010873. (M)