Hi everyone,

I hold a CPL and Instrument Rating issued in Argentina under ICAO standards, and I'm starting the process of converting to an Australian CASA licence. As I understand it, this means CHUF + COSA for the CPL, plus a flight test, and possibly something separate for the IR (still confirming with CASA exactly what applies to the instrument rating conversion).

A few questions for anyone who has been through this:

1. Where did you study for COSA specifically? I understand it draws from CPL Air Law, Meteorology and Navigation rather than being a single clean subject - did you use a single book/course or combine a few?
2. Any tips on the CAR/CAO/CASR extracts or permitted materials that made the biggest difference for you?
3. If there's anyone from Argentina or elsewhere in South America who has done this conversion, I'd love to hear about your experience - particularly around the language side of studying Australian law/documents as a non-native English speaker, and how you handled the instrument rating side of the conversion.

Any advice, resources, or war stories are very welcome. Thanks in advance!