[KeplerBoy]

Just think of russian aviation. They're effectively banned from buying spare parts directly from the manufacturers and they don't care about certificates as much as they are banned from flying to western nations anyways.

They're probably building or unknowingly ordering counterfeit parts and naturally those parts pop up elsewhere.

[tankenmate]

It's for this reason that Russian commercial airliner aircraft are now effectively worth 0 as the chain of certification of the planes and their parts are now broken. This may be a problem in the future as unscrupulous traders try to cert wash them back into the system in the future.

[sofixa]

Well it's handy for them that a decent chunk (400+) are stolen from international lessors, so they aren't taking a loss.

[notahacker]

They won't be able to cert wash an airframe back into the system. They might be able to falsely certify the engines and other parts