Thanks Kiwiandrew:
I found these three:
http://www.suresave.net.au/holiday.php
http://www.aussietravelcover.com.au/
http://www.covermore.com.au/compare-our-plans
Cost appears "reasonable" (about $300.00).
I can't be sure whether this is effectively the same policy "rebadged" by three providers.
Each of these policies includes an "exclusion list" of airlines they won't cover. Interestingly, there are some very big players on there: and of interest (to me) is that two airlines whose initials are "AA" are not covered.
One is of course the subject of this thread. But the other came as a surprise to me!
Cheers