As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE FLYING, THE PILOTS FELT A BUMP IN THE AIRCRAFT AND LOOKED DOWN USING THE CARGO MIRRORS TO SEE THE LOAD IMPACT THE WATER. INSPECTION OF THE HOOK SYSTEM WAS DONE AND WAS FOUND TO BE BROKEN, INTERNAL STEEL CABLE STILL INTACT, ALLOWING FOR THE HOOK TO BE MANUALLY ACTUATED AND OPENING THE HOOK AS IT SWUNG FROM SIDE TO SIDE.