Americans can purchase printed NATOPS here:http://www.eflightmanuals.com/detail/itemList.asp?page=4&cID=3
OR same can be bought as DVDs or sometimes downloaded from:http://www.chqsoftware.net/product_info.php?products_id=393&osCsid=157bdf5643abe37411a1fc2e835ae831
There was an online store in New Zealand which usually allowed either a fast download or CDrom version of their collection of NATOPS manuals but for the moment I cannot find this website. As soon as found I'll post info here.http://www.flight-manuals-on-cd.com/F18.html
This website (New Zealand) used to allow downloads of these PDFs - maybe only some - I don't have time to investigate further but will do so later.
EDIT: Did not have time to follow up earlier but I see on this page:http://www.flight-manuals-on-cd.com/Orders.html
"Decide how you want to receive the files, and
calculate any additional costs:
Option 1- By Post
- Postage costs an additional US$3.05 for one CD.
For two or more CD's, postage is free.
We use insured first class airmail. It usually takes
7 to 10 days.
Option 2 - By Download
We have uploaded all of our files to a specialist
storage site, www.megaupload.com
and they can be
downloaded from there. There are no additional costs
for this option. Once we receive payment, we will
email you the link to the downloadable file.
You will need a broadband connection for this option
as the files can be quite large."
In the past (many years ago now) I bought the Skyhawk NATOPS on CD from this website with good results. Later I scanned my own personal copy of the A4G NATOPS (same as E/F & K) which can be downloaded for free from here:http://www.a4ghistory.com/A4G-NATOPSbestQualitySearchable.pdf
Lesser quality, smaller file size A4G Skyhawk NATOPS scans in PDF (but really OK for most purposes) can be found here:http://www.filefront.com/user/SpazSinbad