AK, I disagree that prices are doubling and flying schools are closing at Jandakott (sic) In fact the landing fees haven't changed since the privatisation, and the infrastructure and services to tenants are a whole lot better than when the FAC were here.
I think it's important to do some research and get your facts right when sending letters to ministers if you want any credibility.
Best leave it to your local chamber of commerce or other local operators group or individuals, rather than pretend to represent people at an airport you can't even spell.