Some information here... One of the helicopters Hansens claim has been seized and the airworthiness cancelled has been still out flying off the boats (with others) and crashed on the 30th May 2017 off the back of a taiwan boat near Pohnpei. The helicopter was landed in Pohnpei and I saw it covered in plastic on the wharf being rushed into a container as I arrived in port. The rego marks were tried to be covered up, but could be seen with some poking around. It had been out flying for more than a year with no valid paperwork. No wonder the feds are after them!
Look up N504WW on the FAA website.