What was found
AIRCRAFT WAS GROUNDED: CABIN EMERGENCY POWER SUPPLY UNIT LOCATED AT 12WL FAILED THE EMERGENCY LIGHTING OPERATIONAL CHECK DURING A-CHECK. REMOVED AND REPLACED THE CABIN EMERGENCY POWER SUPPLY LOCATED AT12WL
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: CABIN EMERGENCY POWER SUPPLY UNIT LOCATED AT 12WL FAILED THE EMERGENCY LIGHTING OPERATIONAL CHECK DURING A-CHECK. REMOVED AND REPLACED THE CABIN EMERGENCY POWER SUPPLY LOCATED AT12WL