[Avimimus]

Good question. I'm pretty sure that this one comes from the interviews (as opposed to forums).
Try: http://www.simhq.com/_air8/air_265a.html
If that doesn't work try: http://www.simhq.com/_air6/air_223a.html , http://www.simhq.com/_air6/air_220a.html , http://www.simhq.com/_air10/air_310a.html