What was found
DURING SERVICE CHECK, STEP 7, CEILING EMERGENCY LIGHTS ROW 13 AND FORWARD FAILED TO ILLUMINATE IN ANY OF THE THREE TEST MODES. REPLACED BATTERY PACK IAW AMM 33-51.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING SERVICE CHECK, STEP 7, CEILING EMERGENCY LIGHTS ROW 13 AND FORWARD FAILED TO ILLUMINATE IN ANY OF THE THREE TEST MODES. REPLACED BATTERY PACK IAW AMM 33-51.