As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT OVERWING EMERGENCY EXIT LIGHTS INOP ON THE AFT OUTSIDE AND INSIDE LIGHTS ; LEFT OVERWING EMERGENCY EXIT LIGHTS INOP ON THE AFT OTSIDE AND INSIDE LIGHTS / [01] REMOVED AND REPLACED POWER SUPPLY BATTERY PACK ON CHARGER ASSY M1670. OP?S CHECKS GOOD. REF AMM 33-51-06.