What was found
UPON SCHEDULED REMOVAL FOR INSPECTION, ELT BATTERY CASE WAS FOUND SPLIT OPEN AND LEAKING. CASE WAS SPLIT INTO SEVERAL PIECES. AREA BETWEEN BATTERY PACK AND HEAD OF ELT APPEARED TO HAVE OVERHEATED. BATTERY IS MOUNTED UNDERNEATH AIR CONDITIONER CONDENSOR AND ABOVE ANTI-SKID CONTROL BOX. ALL ABOVE COMPONENTS ARE LOCATED BEHIND TAILCONE BAGGAGE COMPARTMENT. IT IS NOT KNOWN IF ELT FAILED ON ITS OWN OR IF EXCESSIVE EXTERNAL HEAT WAS A FACTOR. INSTALLED NEW ELT'S. ELT INSPECTION FREQUENCY BEING INCREASED.