Just hours before Bombardier Inc. was to unveil a dramatic plan to escape its latest crisis, Jerry Dias was summoned to Montreal to meet with Alain Bellemare, the beleaguered firm's chief executive. There, the head of Canada's largest private-sector union was told that after months of searching for partners to help finance its sleek new C Series jet, Bombardier would be teaming up with European manufacturer Airbus, which would take on much of the responsibility for building and selling the aircraft.