Somewhere in law - don't ask me where 'cos I don't remember - and most certainly in accounting 'goods for trade' is defined as inventory offered for sale. 'Stock' is another term used similarly. 'Equipment' or 'Operating Equipment' is equipment, tools and other items that is used to run the business.
If CASA are trying to hang a PPL contractor flying with his equipment to a job then the victim needs a lawyer who is aware of the difference.