EDIT: Removed link since it is broken for the new beta site... sigh
EDIT2 (Debugged): Accumulation info is here:
https://beta.aircanada.com/content/d...milage_en.html but it tries to be too 'smart' and defaults to A3. LH info here:
https://beta.aircanada.com/content/d...og-box/lh.json
It says T will accumulate 50%, which is the reason I assume you've asked?