As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ASSOCIATED EMERGENGY LIGHTS WITH BATTERY PACK M1673 ARE INOP. REMOVED AND REPLACED PWR SUPPLY BATTERY PACK OF THE EMERGENCY LIGHTS AT POSITION M1673(AFT LT); OPERATIONAL TEST FOUND NORMAL IAW AMM 33-51-06-960-805 AND WDM 33-51-14 AND 33-51-22.