As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: 2 SEAT MOUNTED EMERGENCY LIGHTS DO NOT ILLUMINATE AT SEAT LOCATIONS 14C AND 15C. RESEATED CONNECTORS AT BOTH ROWS 14ABC (AALA202104119007) AND 15ABC (AALA202104129011) EMERGENCY LIGHTS. EMERGENCY POWER SUPPLY UNIT TEST SHOWS BATTERY FAULT AT LOCATION 11WL. REMOVED AND REPLACED THE BATTERY OF EMERGENCY POWER SUPPLY UNIT 11WL PER AMM 33-51-38.