In article , Ray wrote:

My interpretation is that this data is just as legal as a paper AF/D
since this is the official source of the AF/D. So you can probably
argue that as long as you can verify that the source database is
current, using a website like airnav which parses the database for you
is also legal.

Just like using Jepp instrument charts. They just get the raw data from
the FAA and print it up in a convenient form. They don't have any special
signet ring that makes their charts any more official than anybody else's.