As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN ROTOR BONDING STRAP BROKEN. THIS IS A CONSTANT PROBLEM, PORTION OF THE STRAP WHICH CONTINUES TO BREAK IS MADE OF COPPER. THIS END OF THE STRAP BOLTS TO A STAINLESS STEEL CONNECTION WHICH NEVER BREAKS. THE ENDS OF THE BONDING STRAPS SHOULD BE MADE OF A STAINLESS STEEL MATERIAL OR SOMETHING MORE RELIABLE THAN A COPPER FITTING.