In order to stay current, you must have a valid Medical Certificate and meet the regulatory requirements for recency and currency.
There are three time frames for recency requirements: 5 years, 2 years and 6 months. If you wish to be pilot-in-command or co-pilot, you must meet both the 5 year and 2 year recency requirements. If you wish to carry passengers you must also meet the 6 month requirement.
2 Year Requirement:
You must have successfully completed a recurrent training program within the previous 24 months. There are 7 ways to meet this requirement:
Participate in a Transport Canada approved recurrent training program
5 Year Requirement: 1 of the following
6 Month Requirement:
The 6-month requirement is for carrying passengers. You must have completed 5 takeoffs and landings in the same category and class within the previous 6 months. If the flight is to be flown at night then the takeoffs and landings must have been completed at night.