According to the BBC website, G-BOAC has been temporarily put out of service, due to frayed wires being found.
It wasnt until engineers discovered the problem on Monday that the aircraft was grounded, although the other aircraft I believe are still able to fly.
According to one spokesman, he says they think a small fire may have broken out on board (undetected) and this is what caused the wires to fray.
..See bbc news for more info..
also I hear on good news that BA are releasing 1000 free tickets to fly on Concorde, I believe there launching the campaign sometime in July.
Ill be getting a ticket then lol