70 N.Y.2d 579 (1988)
A manufacturer can be held liable for a design defect even after a part has been replaced if the replacement part maintains the same defective design as the original, and the manufacturer foresaw or should have foreseen such a replacement.
Summary
Joan Sage, an airline employee, was injured by a defectively designed ladder hanger in an aircraft cargo compartment. The hanger, initially designed by Fairchild-Swearingen Corp. (Fairchild) but replaced by a similar part made by Sage’s employer, caused a severe finger injury. The court addressed whether Fairchild could be liable for the defective design despite the part replacement. The Court of Appeals held that Fairchild could be liable because the replacement part maintained the original defective design, and Fairchild had foreseen the likelihood of such replacements. The case was remitted for a new trial due to concerns about the weight of the evidence supporting the verdict.
Facts
Joan Sage worked for Commuter Airlines, Inc. While unloading baggage from a Commuter aircraft manufactured by Fairchild, Sage injured her finger on a ladder hanger attached to the cargo compartment doorway. The hanger was a replacement part made by Commuter employees. The original hanger design included a plastic grommet to prevent metal-on-metal scraping, but the replacement lacked this feature. The hanger’s “u” or “v” shape and its location on the doorframe presented a hazard to personnel entering and exiting the cargo area. Fairchild’s representatives acknowledged that purchasers would likely fabricate replacements rather than order them from the manufacturer.
Procedural History
Sage sued Fairchild on negligence and strict products liability theories. Fairchild impleaded Commuter, alleging negligence and failure to provide a safe workplace. The jury found for Sage, attributing 75% of the fault to Fairchild and 25% to Commuter. The Appellate Division reversed and dismissed the complaint, citing Robinson v. Reed-Prentice Div., reasoning that Fairchild didn’t manufacture the specific hanger involved in the injury. The Court of Appeals reversed the Appellate Division’s order and reinstated the complaint, but remitted the case for a new trial due to the Appellate Division’s determination that the verdict was against the weight of the evidence.
Issue(s)
Whether a manufacturer can be held liable for a design defect in a product when the injury is caused by a replacement part not manufactured by the original manufacturer, but which replicates the original defective design.
Holding
Yes, because the manufacturer’s defective design was the proximate cause of the injury, and the manufacturer could have foreseen that the part would be replaced with a similar design.
Court’s Reasoning
The court reasoned that imposing strict liability on manufacturers is based on public policy, which holds sellers responsible for injuries caused by their products. A product can be defective due to a manufacturing flaw, design defect, or inadequate warnings. This case concerned a design defect. Unlike Robinson v. Reed-Prentice Div., where a purchaser substantially altered a machine by removing safety devices, here the replacement part maintained the original defective design. The jury found the original hanger design defective because its utility was outweighed by the dangers it created. The court emphasized that the manufacturer knew or should have known that the hanger might be copied and replaced with a similar design. Allowing the manufacturer to escape liability would encourage the design of flimsy parts, knowing that liability would cease once the part was replaced. The court stated, “[T]o insulate a manufacturer under such circumstances would allow it to escape liability for designing flimsy parts secure in the knowledge that once the part breaks and is replaced, it will no longer be liable.” The court found that Sage presented a valid claim and established a prima facie case as the jury had a valid line of reasoning and permissible inferences that could lead rational people to the jury’s verdict. The court ordered a new trial because the Appellate Division found the jury’s verdict against the weight of the evidence.