Hi butterfly8. Here's a Wikipedia article on the Spruce Goose. https://en.wikipedia.org/wiki/Hughes_H-4_Hercules
Plenty more info on the WWW. I suggest you Google it.
This is the FS2004 version --> https://simviation.com/1/search?submit=1&keywords=FS9-SpruceGoose.zip&categoryId=&filename=Y