I have also heard people say that airlines don't chase the bond.
However I have also heard the opposite and seem to recall a poster on these forums warning of the situation they find themselves in being chased by a previous employer.
You could chance it, but there is an integrity thing here.
If the airline survives and there are many many good people working immensely hard to keep it afloat, then jumping ship now may be a very unpopular move and you would loose the benefit of a job and hours building.
Good luck, but remember it is a signed contract and enforcing it is just a matter of 30mins work on a website and a small fee, a CCJ is not something you want.