Comment by Etheryte

Articles like these are a good example that while Russia often tries to downplay or outright deny the sanctions have any effect on them, they do work. This is only one specific example with a specific plane model, but their whole airline industry is facing similar issues on many fronts. Many repairs that used to be business as usual are now either prohibitively expensive or downright impossible due to the sanctions. Similar problems exist across a wide range of industries in Russia. There's a reason why they closed off their stock market, they can't afford to let the full impact be visible.