Charles Brown, et al. v. Crown Equipment Corporation

We granted appeal in this products liability action to determine whether the trial court erred in excluding as unreliable the testimony of the plaintiffs’ two expert witnesses, a mechanical engineer and a biomechanical engineer, and thereafter granting a directed verdict in favor of the defendant. We hold that the trial court erred in applying the nonexclusive list of reliability factors set out in McDaniel v. CSX Transportation, Inc., 955 S.W.2d 257 (Tenn. 1997). These factors are not mandated in every case in which expert evidence is offered and should not be applied unless the factor or factors provide a reasonable measure of the expert’s methodology. We further conclude that the trial court erred in granting a directed verdict in favor of the defendant. Accordingly, we reverse the judgment of the Court of Appeals, which affirmed the trial court’s judgment. We remand the case to the trial court for further proceedings in accordance with this opinion.