Airline Transport (ATPL)
Assuming you have a commercial license, you can study for an Airline Transport Pilot License. The Canadian ATPL allows pilots to fly as pilot-in-command of an airline sized aircraft (two-crew environment as PIC) in instrument flight rules (IFR).
Achieving this license requires sitting two written exams. The first, SARON, for Air Regulations and Air Traffic Procedures, Airplane Operations and Navigation General - 80 questions, 3 1/2 hours, 70% pass. The second, SAMRA, is for Meteorology, Radio Aids to Navigation and Flight Planning - same 80 question 3 1/2 hours, 70% pass.
And ACE is again there to help you in preparing for this exam marathan, representing both a culmination and expansion upon knowledge learned in the PPL and CPL, as well as a Group 1 IFR rating and the corresponding INRAT exam.