U.S. Court of Appeals for the Seventh Circuit in Chicago has affirmed a decision by the district court judge regarding circumstantial evidence without an expert witness. In this case, the plaintiffs, Howard Piltch and Barbara Nelson-Piltch, were driving in their 2003 Mercury Mountaineer in 2006 when they were involved in an accident; the airbags of their vehicle did not deploy. After the crash, the couple repaired their car, but did not confirm whether the restraint control module, which monitors a crash and electronically decides whether to deploy airbags, was reset during or after repair work.
One year later, the Piltches were driving the car when it hit a patch of black ice. This caused the car to slide off of the road and hit a wall. On impact, none of the cars’ airbags deployed.
After the second crash, the couple had their Mountaineer repaired at the same repair shop that had repaired the car after the 2006 incident. In 2009, the Piltches sold the car to a mechanic who reprogrammed the vehicle’s black box, wiping out the data that might have been remaining from either of the two crashes.