EMB120ER, the 25 penalty units ($2,750) means that if a cropduster at a grass strip in the middle of nowhere joins straight onto base, or joins on a final of less than 5 nautical miles, he or she is up for that fine.
Of course, CASA inspectors ignore it – that’s why they have so little credibility. I don’t blame the inspectors. Imagine working for an organisation that brings in unique prescriptive requirements with substantive fines (because that’s what a few uninformed and closed minded regional pilots want), knowing that they have absolutely no intention of enforcing them.