Other links:
http://deltavan1.wordpress.com/2013/03/02/3-topics-of-interest-to-airline-folks/
http://www.iuscomp.org/cgi-bin/dcforum/dcboard.cgi?az=read_count&om=1595&forum=DCForumID10
http://reparacionesbs.site11.com/phpBB3/viewtopic.php?f=6&t=20516