As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
M1669 EMERGENCY EXIT LIGHT BATTERY PACK STA 603 WL 212 RBL 67 ALL ASSOCIATED LIGHTS INOP / [01] REMOVED AND REPLACED EMERGENCY EXIT LIGHT BATTERY PACK M1669 WITH SERVICEABLE UNIT AND PERFORMED GOOD INSTALLATION TEST PER AMM 33-51-06-960-805;[02] VERIFIED CORRECTIVE ACTION #1