This really is EC-EOX (ex N90632 ex US Navy 414090 ex US Army 64-14090), fitted with the tailboom of EC-EOI (c/n 408 ex N5023U ex US Army 62-1888) and still carrying that registration. EC-EOX was first registered in Spain on 6 Sep 1989 by Helicsa Helicópteros, and was later transferred to FAASA. She was withdrawn from use in 2003 and has been dumped here ever since.