As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YNG - FLT 3360 - IN CRUISE, THE LT BATTERY TEMP WARNING LIGHT ILLUMINATED. THE CREW DISCONNECTED THE LT BATTERY AND THE TEMPERATURE CONTINUED TO INDICATE A HIGH TEMPERATURE. THE AC RETURNED TO DTW. MAINTENANCE REPLACED THE CANNON PLUG AT THE BATTERY. SYSTEM OPERATED SATISFACTORILY. (W)