What was found
AIRCRAFT WAS GROUNDED: EMERGENCY LIGHT OUT AT ROW 12 OVERHEAD CEILING PANEL . REPLACED EMERGENCY POWER SUPPLY UNIT 14WL BATTERY PER AMM 33-51-38.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: EMERGENCY LIGHT OUT AT ROW 12 OVERHEAD CEILING PANEL . REPLACED EMERGENCY POWER SUPPLY UNIT 14WL BATTERY PER AMM 33-51-38.