[QUOTE
quote "definitely not, fixed wing are quieter...." That's the opposite of my experience on the Barkly Tablelands. Hardly a plane in sight, and R22's used for mustering.
[/QUOTE]
Depends on the country and the stock you are mustering.
We used fixed wing in the Upper Gascoyne because that country is very light and stocking rates are low for both cattle and sheep. Rotary wings were simply too expensive.
We also found sheep are better worked on the ground so the aircraft's role was more spotting than mustering.
Kaz