Did they? I remember that the 30 day cooling off period came to an end and they kept talking till they had a deal. Did it happen at 3am for a few minutes?
No, they never technically went on strike, but they hit the deadline at midnight and the airline shut down for a couple of days while they worked out the details of a deal. The process works when politicians don't get their slimy hands in it. This was one of the few cases where Bush's NMB actually let the process work as it was supposed to.