What was found
AIRCRAFT IN BASE MAINTENANCE: INOPERATIVE EMERGENCY POWER SUPPLY UNIT ASSEMBLY 13WL AT AFT GALLEY AREA. REPLACED EMERGENCY POWER SUPPLY UNIT 13WL IN PASSENGER CABIN.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT IN BASE MAINTENANCE: INOPERATIVE EMERGENCY POWER SUPPLY UNIT ASSEMBLY 13WL AT AFT GALLEY AREA. REPLACED EMERGENCY POWER SUPPLY UNIT 13WL IN PASSENGER CABIN.