What was found
DURING NON ROUTINE CHECK, FOUND EMERGENCY LIGHTS TEST FAULTS "EPSU EMERGENCY RIGHT". REPLACED POWER SUPPPLY BATTERY PACK UNIT AND FUNCTIONAL CHECK WAS NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING NON ROUTINE CHECK, FOUND EMERGENCY LIGHTS TEST FAULTS "EPSU EMERGENCY RIGHT". REPLACED POWER SUPPPLY BATTERY PACK UNIT AND FUNCTIONAL CHECK WAS NORMAL.