As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS ATTACHED TO M1671 DO NOT OPERATE. POWER SUPPLY AND BATTERY PACK M1671 WAS REPLACED AND A GOOD FUNCTIONAL TEST OF ALL ASSOCIATED EMERGENCY LIGHTS WAS PERFORMED IAW AMM 33-51-06-960-805 & AMM 33-51-06-960-806. CERTIFIED ACTION 1. VERIFIED TASK C/W