What was found
DTW - EMERGENCY CEILING LIGHTS ROWS 19-21 IS INOPERATIVE. REMOVED AND REPLACED BATTERY POWER SUPPLY PACK AND OPS CHECK GOOD IAW MM 33-50-00. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DTW - EMERGENCY CEILING LIGHTS ROWS 19-21 IS INOPERATIVE. REMOVED AND REPLACED BATTERY POWER SUPPLY PACK AND OPS CHECK GOOD IAW MM 33-50-00. (M)