There are numerous pathways to becoming an airline pilot. One pathway, which is the one taught at FTA, is as follows
Step 1. Complete a AVI50222 Diploma of Aviation (Commercial Pilot Licence – Aeroplane)
On successful completion of an AVI50222 Diploma of Aviation (Commercial Pilot Licence – Aeroplane), you will be a commercial pilot. As such you can exercise the privileges of the licence and gain renumeration from flights you undertake. However, this licence is very limited in that you will only be able to conduct flights on a single engine piston aircraft, under limited meteorological conditions
Detailed information on FTA’s AVI50222 Diploma of Aviation (Commercial Pilot Licence – Aeroplane) can be found here https://www.flyfta.com/?wpdmdl=43596
Step2. Complete a AVI50519 Diploma of Aviation (Instrument Rating) Multi-Engine Aeroplane
On successful completion of a AVI50519 Diploma of Aviation (Instrument Rating) Multi-Engine Aeroplane, you will be able to operate aircraft with two engines, using instruments, thus eliminating meteorological limitations.
Detailed information on FTA’s AVI50519 Diploma of Aviation (Instrument Rating) Multi-Engine Aeroplane can be found here https://www.flyfta.com/?wpdmdl=43606
Successful completion of these two steps will get you the minimum qualifications to apply for a first officer position with an airline. If you are successful in getting a job with an airline, the airline will provide training towards a type rating course.