According to wikipedia their fleet is 95 % Airbus and Boing. I’d assume the sanctions (lack of parts/service) may make it not possible to operate those. In that case the sanctions are very effective.

It will also be very interesting to see if they can continue to produce, or even maintain, the Sukhoi Superjet 100 while under sanctions (The engine is partly made by french company Snecma). If they can’t, the russian aviation industry will come to a screeching halt, very fast.

Interesting times for everyone, and not in a good way…