When you enter full retirement, you will need to send CRPN your application to claim the remainder of your entitlements which you did not claim through the alternating work-retirement program. CRPN will need to receive your application by the month in which your air crew employment contract is terminated (Our online application to claim entitlements is available through your personal account).
You can refer to informational guide “Retiring through the alternating work-retirement program (as from January 1st, 2019)”.