https://www4.aeroplan.com/whats_new/...020_2016_03_28

Please note the following accrual structure changes for Air China, starting as of March 27, 2016.

Earn 150% of the miles you fly in booking classes J, C, or D. For travel before March 27, 2016, earn 125%.

Earn 125% of the miles you fly in new booking class R.

Earn 110% of the miles you fly in booking class G. For travel before March 27, 2016, earn 50%.

Earn 90% of the miles you fly in new booking class E.

Earn 75% of the miles you fly in booking classes U, Q or V. For travel before March 27, 2016 earn 50%.

Earn 75% of the miles you fly in booking classes M or H. For travel before March 27, 2016, earn 100%.

Earn 50% of the miles you fly in booking class W. For travel before March 27, 2016, earn 100%.

Earn 50% of the miles you fly in new booking class T.

Earn 25% of the miles you fly in booking classes L or K. For travel before March 27, 2016, earn 100%.

To learn more consult the Air China accumulation structure.