What was found
AFTER SWITCHING TO EXTERNAL POWER, CREW NOTED THE LT SIDE EMERGENCY LIGHTS ILLUMINATED. MX REPLACED THE BATTERY PACK AT LOCATION M731.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER SWITCHING TO EXTERNAL POWER, CREW NOTED THE LT SIDE EMERGENCY LIGHTS ILLUMINATED. MX REPLACED THE BATTERY PACK AT LOCATION M731.