whoooop1991 you keept getting it wrong.
Heron Airlines Travel Pty is a totally seperate entity from Airtex/Avtex. Do a compnay search.
The reality is Heron Airlines is the one that choses the aircraft and operator.
They have been using a variety of operators including Do228's from Melbourne, Beech 1900's from Malaysia, Metro II's from Sydney and approxiametly 5 different operators/aircraft in the Chieftain category.
As such they have provided employment for a large number of pilots etc in an industry that has been in decline for the last 20 years.