As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRAIDED WIRE TYPE BATTERY CABLES LOOSE AT BATTERY TERMINALS, CAUSES SEVERE VOLTAGE FLUCTUATIONS AND FLIGHT INTERRUPTION. OPERATOR REPORTS NUMEROUS PROBLEMS WITH THIS TYPE CABLE. EXTREMELY DANGEROUS CONDITIONS RESULT WHEN BRAIDING COMES UNDONE AND BATTERY TERMINALS GET LOOSE.