Negotiators at Boeing and its largest union are due to resume talks over a labor contract on Tuesday, as the planemaker seeks to bring a swift end to a strike that is costing the indebted company an estimated $100 million a day.

Machinists at Boeing have gone on strike, another setback for the aviation giant whose reputation and finances were already being battered.

Unlike strikes at airlines, which are very rare, a walkout at Boeing would not have an immediate effect on consumers. It would not result in any canceled flights. It would, however, shut down production and leave Boeing with no jets to deliver to the airlines that ordered them.