Once had the 'delightful' experience of a Balkan Bulgarian Tu154 LGW-Plovdiv back in the late eighties for a ski holiday.
The mirror in one of the toilets was wedged with a folded up sick-bag to stop it rattling (empty sick-bag, I hasten to add). A split in the off-white fabric in the cabin ceiling was covered with an Elastoplast, and the carpet between the seats was one long piece of material (my friend in the next seat pulled his legs back after having stretched out, only two find he had about four feet of carpet in his lap).
Best of all was the food - pickled gerkins with everything - and a half-bottle of wine per pax (which we all drank to calm the nerves). Never seen so many missing rivets on an airliner - before or since - but we got there and back, which is more than can be said for many 154s.
Last one I saw in the UK was at MAN a few years ago. Could hear it and see the black smoke trail even before I see the landing lights or the fuselage!