As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE ENGINE QUITE IN CRUISE AND THE PILOT MADE A DEAD STICK LANDING ONTO THE WATER. UPON INSPECTION FOUND THE SAFETY GROUNDING TAB IN THE FIREWALL PLUG APPEARED TO BE BROKEN OFF AND FELL ACROSS THECONTACT PINS, SHORTING OUT BOTH MAGS. NOT SURE BECAUSE THE PLUG WOULD HAVE TO BE DESTROYED TO GET IT APART.