As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT OVERWING EMERGENCY LIGHTS ON. DURING T/S, FOUND CB A10, LT AFT EMGER CHARGE, ON P18-3 PANEL HAD POPPED. ALL LT AFT EMERGENCY LIGHTS STARTING WITH OVERWING EXIT TO BACK OF ACFT ARE TURNING ON WITH OVERHEAD EMERGENCY EXIT LIGHTS SWITCH IN ARMED POSITION FOUND AFT LEFT BATTERY PACK AND CONTROLLER INOP. (M1673) REPLACED POWER SUPPLY AND BATTERY PACK(M1673) IAW AMM 33-51-06-960-806. OP CHECKED GOOD.