What was found
AT DEPARTURE CHECK, FOUND THAT THE LT OVERWING EXIT EMER LIGHT FAILED THE STDBY PWR CHECK. REMOVED AND REPLACED BATTERY PACK AND PWR SUPPLY RACK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AT DEPARTURE CHECK, FOUND THAT THE LT OVERWING EXIT EMER LIGHT FAILED THE STDBY PWR CHECK. REMOVED AND REPLACED BATTERY PACK AND PWR SUPPLY RACK.