After reading some bits of the site I found there were only a few LiveCD's with FlightGear on it available (with very old versions on it).
I created one using Slax: http://old.slax.org/build.php
You can import a textfile with the following contents:
Selected modules: 3971,1,2,1077,4093,3972,1621,535,3749,3132,1659,2129,3,1517,2116,1569,1292;
Selected language: en;
Your LiveCD will be build and ready to download. It's about 181 MB, and easily fits on a CD.
The FlightGear on this CD is pretty old (version 1.9.1), it shouldn't be to hard to fix an update.
Now: Testing.... Will let you know how and if it works.