I remember watching the arrival of the other one in 2008 at YSBK. VH-CAT was the registration. That was the first time I saw one of these. It was a great sight, a real treat. They are just unique. Anybody will notice them flying due to their slow speed and the kind of sound its engines make.
Here are some photo links from the old thread:
By Diesel Fitter
http://farm4.static.flickr.com/3099/...a787d89b16.jpg
http://farm4.static.flickr.com/3085/...353a89d143.jpg
And another photo taken at Bankstown
