Find quality aeronautical documentation on the Internet like blue prints, flight manuals or maintenance manuals is usually a challenge.
That's why HydroZ collect a maximum of documents and keep them available to everyone, freely, upon request.
Making a web site would be too complicated and too heavy (more than 200GB of data ...).
If, by your side, you have interesting documents, we will be happy to collect them:
These documents are available for personal use only (like RC modeling or flight simulator use) . HydroZ can't vouch for their accuracy or origin. They mustn't be used for any real aeronautical use.