As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L/H AFT OVERWING ESCAPE LIGHT AND ESCAPE GROUND LIGHT INOP EMERGENCY BATTERY M1670 LOCATED IN CABIN BEHIND AIR RETURN AT FWD SIDE OF 21ABC<[01] REMOVED AND REPLACED EMERGENCY BATTERY PACK M1670 WITH NEW FROM STOCK. OPS CHECK GOOD.;[02] REMOVED AND REPLACED EMERGENCY BATTERY PACK M1670 WITH NEW FROM STOCK IAW AMM 33-51-06. OPS CHECK GOOD.;[03] IAW AMM 33-51-06