As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED. EMERGENCY LIGHTS ON RIGHT SIDE OF AIRCRAFT, ROW 20 BELOW ESCAPE DOOR ARE INOPERATIVE. REMOVED AND REPLACED BATTERY PACK AND POWER SUPPLY CONTROL MODULE (AALA201709069009) PER AMM 33-60-98. OPERATIONAL CHECK GOOD.