I am more surprised there is not a sufficiently rich black-market operation going around sanctions.
Random site[0] says,
>In general, airplane brakes can last between 1000-2000 landings before they are changed. An active airplane makes an estimate of two landings per day; this means the airplane needs to be changed after 18-36 months.
Even at multiple brake pads(?) per plane, that does not sound an insurmountable amount of shady dealings required to keep planes operational if you have 1.5 years of <ahem> runway for your maintenance window.
Random site[0] says,
>In general, airplane brakes can last between 1000-2000 landings before they are changed. An active airplane makes an estimate of two landings per day; this means the airplane needs to be changed after 18-36 months.
Even at multiple brake pads(?) per plane, that does not sound an insurmountable amount of shady dealings required to keep planes operational if you have 1.5 years of <ahem> runway for your maintenance window.
[0]https://www.highskyflying.com/how-often-do-airplanes-change-...