Uh,
Excuse me gentleman, but I do not see any comment on the crack in the wing surface.
I mean that would be enough to get them to stay on the ground, assuming, of course that someone has the SRM for Tu154 or at least there is someone responsible for the maintenance of that a/c.
If I see well there might be some corrosion there, as well so the sooner this bird gets a good "veterinarian" the better it is.
I mean tires are a problem, of course, but if that crack has gone where it shouldn’t it would be a pity to loose the a/c, doesn’t it?
Structural failure should not be an option, if they have proper procedures set out…one wonders, of course, how come that this carrier can land ANYWHERE?
By the way Bulgaria is Category 1 country (sic!), if this is the a/c from their registry. One wonders…