As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY BATTERY PACK M1674 DEFECTIVE; ALL LIGHT ASSOCIATED WITH THIS BATTERY PACK; OFF.<[01] REPLACED BATTEY PACK M1674 AS PER REFERENCE AMM 33-51-06-960-805.<BR>PERFORMED EMERGENCY LIGHTS- OPERATIONAL TEST AS PER REFERENCE AMM 33-51-00-710-801.TEST NORMAL;[02] VERIFIED AND INSPECTED STEP#1.