Hi VH_AHL Welcome to our home away from home. Enjoy your stay.
I just did a search and came up with two different Aircraft for the same rego :/
one is here -->
http://photos.airliners.net/photos/3/2/6/137623.jpg
and the other is the description,
VH AHL
Aeroplane with retractable tricycle landing gear
2 turboprop engines
Make and type: Hawker Siddeley Aviation Ltd HS 748
Model: HS 748
Serial number: 1606
Aircraft first registered in Australia: 04/02/2005
interesting!
My guess is that the helicopter was scrapped or destroyed and the newly registered Aircraft took over it's rego :/