badhairs and porkshanks:A couple fonts you might be able to use:
http://www.dafont.com/aeroplanes.font
http://www.dafont.com/xeppelin.font
Actually, the "Various dingdings sections" has a lot of great clipart in the form of fonts:
http://www.dafont.com/theme.php?cat=721&page=1
Enjoy!