I was hoping that this wouldn't be brought up in this thread, but I'll just say this...
It is clear as day (as shown in my later thread) that this freeware Grumman Duck, as produced by SWingman, has nothing to do what-so-ever with the payware Grumman Duck by IcarusGold. Why the allegation was made by the representative of that company, is anyone's guess at this point. The only reason why it was removed from the site that it was available at, is due to that single, unsupported directive.
At this time, it appears that the files are still not available.
I have done what little I can do, to try and clear that up here in the forums. I have also just sent an e-mail to SWingman, and I am hopeful that his excellent gift to our community will be restored/re-released as soon as possible, so for those who had yet to be able to download it, can. His work is only deserving of praise and enjoyment, and despite never corresponding with the developer of this aircraft before, I can't help but feel the need to restore the wishes he had for this production of his, and that is to have it freely available (justifiably so!) to the flight sim community.
Furthermore, while the subject matter (aircraft type) of this topic might not be important to everyone, I hope that the issue behind this situation is.