As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BATTERY LEAKS FROM AROUND TOP SEALING JOINT BEHIND POSITIVE POST. THIS IS THE THIRD HELICOPTER WITH CORROSION DAMAGE THAT WE HAVE FOUND CAUSED FROM A BATTERY OF THIS PN. RECOMMEND BOTH BATTERY AND HELICOPTER MFG GET TOGETHER AND CORRECT THE PROBLEM. THERE HAS BEEN OTHER REPORTS FROM OPERATORS OF THIS HAPPENING.