IIRC (and correct me if I am wrong) that when the BA Concordes last flew, the engineer's went over them and drilled little holes all over the cabin floor to ensure they could never be pressurised again.
I have a vague recollection that it was done in response to a rumour that Sir R B was going to buy one off a museum and restore it to flying order.
Again ... tell me if I am wrong
Just thinking about the wonderful aeroplane sent me to this site
again ... so I share it with all enthausists.
BBC NEWS | Special Reports | Concorde retirement