As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DR 4LH (M33407) EMERGENCY LIGHT BATTERY PACK FAIL TEST. REQUIRED TO REPLACE BATTERY PACK. DR 4LH (M33407) EMERGENCY LIGHT BATTERY PACK REPLACED AS PER AMM 33-15-06 R100. INSTALLATION TEST AS PER AMM 33-51-06 R100, FOUN D WORKING SATISFACTORY.