Read the answers carefully, it says that it never happened with an Airline. Thats not the same as saying it never happened.767 mechanic said:The fact that it has never happened does not mean that they have not tried. You have carefully left something out. When United filed bankruptcy the iam tried to put fleets pension fund in the iam's slush fund,but were stopped by the PBGC. The PBGC is not here to stop them and the iam is in control of negotiations. Even if the twu and the iam vote down party lines 6-6 the iam is in control of negotiations and have the tiebreaker vote. So everyone can see how this is going to go.