As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DOING A PRE FLIGHT INSPECTION I FOUND THAT ACID WAS LEAKING FROM THE ELT BATTERY. FURTHER INSPECTION SHOWS THAT ACID LEAKING FROM THE PACK HAD DESTROYED THE ELT ELECTRONICS MODULE, THE MOUNTING BASE WAS EATEN THROUGH AS WAS THE CARPET AND THE ACID WAS ATTACKING THE FLOOR OF THE BAGGAGE COMPARTMENT.