Air & Liquid Systems Corp. v. DeVries

This case was about when, under maritime law, equipment manufacturers must warn users about the dangers of asbestos in insulation or replacement parts that were later added by the Navy or other third parties. The Court held that a manufacturer has that duty to warn when its product requires the later-added part to work as intended, the finished product is likely dangerous, and the manufacturer has no reason to think users would already know about the danger.