I have found this http://www.auf.asn.au/groundschool/
Probably some of you knows it. I will put it in good place, i have found many good explainations -- Gerard _______________________________________________ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
