Parks v. Ariens Co., No. 15-2664 (8th Cir. 2016)Annotate this Case
Timothy Parks died from asphyxiation after the Gravely Promaster 152Z riding mower he was operating on his property fell off the edge of an embankment and rolled over on top of him. Plaintiff, Timothy's wife, filed suit alleging that the manufacturer of the 152Z, Ariens, was negligent for failing to equip the machine with a rollover protection system (ROPS). The district court granted summary judgment against plaintiff. The optional equipment doctrine holds that a manufacturer is, under certain circumstances, not negligent if a purchaser fails to buy optional safety equipment that would have prevented the accident. Although the Iowa Supreme Court has not yet considered the optional equipment doctrine, policy reasons and the popularity of the optional equipment doctrine lead the court to conclude that the Iowa court would adopt it. Therefore, in this case, the court concluded that Ariens fulfilled any duty it had to Timothy when it provided the ROPS as an optional feature for the 152Z mower and ensured that he had the information necessary to make an informed choice. Accordingly, the court affirmed the judgment.