sign features for protection against fire. The only fact shown by plaintiffs with regard to the seats is that in 1970, 18 years after Martin made and sold the plane, airplane passenger seats, which would have withstood the crash, were in use. The record establishes that when the plane was made and first sold, its design was within the state of the art. The plaintiffs’ affidavit that 18 years after the manufacture and sale of the plane safer passenger seats were in use is not relevant to the determination of whether Martin, by satisfying the 1952 state-of-art requirements, exercised reasonable care and, hence, was not negligent.
Plaintiffs say that state-of-art evidence is not material when the claim is based on strict liability. They argue that a showing of a design defective in 1970 establishes that the plane was defective in 1952, the time of the original sale, absent a subsequent alteration of the plane. For support of their position, plaintiffs rely on Pryor v. Lee C. Moore Corp., 10 Cir., 262 F.2d 673, and Mickle v. Blackmon, 252 S.C. 202, 166 S.E.2d 173. These cases hold that prolonged safe use of a product is evidence of lack of defect but is not conclusive. We have no quarrel with the rule but have no need to apply it here.
There is authority that state-of-art evidence is not relevant to a strict liability claim.
Cunningham v. MacNeal Memorial Hospital, 47 Ill.2d 443, 226 N.E.2d 897, 902, 904; and
Gelsumino v. E. W. Bliss Co., 10 Ill.App.3d 604, 295 N.E.2d 110, 113. The basic reasoning is that the principles noted in § 402A(1) are, by subsection (a), made applicable although “the seller has exercised all possible care in the preparation and sale of his product.” To our knowledge, none of the states whose laws might apply to the instant case have adopted the Illinois rule. We respectfully reject it.
The crucial words in § 402A are “defective condition” and “unreasonably dangerous.” A majority of the courts have required a plaintiff to prove both. See e. g. Kleve v. General Motors Corp., Iowa, 210 N.W.2d 568; Brown v. Western Farmers Ass’n, Or., 521 P.2d 537; and Jagmin v. Simonds Abrasive Co., 61 Wis.2d 60, 211 N.W.2d 810. Some courts have eliminated the “unreasonably dangerous” requirement. See Anderson v. Fairchild Hiller Corp., D.Alas., 358 F.Supp. 976; Cronin v. J. B. E. Olson Corp., 8 Cal.3d 121, 104 Cal.Rptr. 433, 501 P.2d 1153; and Glass v. Ford Motor Co., 123 N.J.Super. 599, 304 A.2d 562. Other courts have eliminated the “defective condition” requirement. See Ross v. Up Right, Inc., 5 Cir., 402 F.2d 943; and Seattle-First National Bank v. Tabert, 86 Wash.2d 145, 542 P.2d 774. We proceed on the basis that both requirements must be satisfied.
With regard to “defective condition” Comment g to § 402A Restatement of Torts 2d at 351, says:
“The rule stated in this Section applies only where the product is, at the time it leaves the seller’s hands, in a condition not contemplated by the ultimate consumer, which will be unreasonably dangerous to him.”
With regard to “unreasonably dangerous” Comment i says, Ibid, at 352:
“The article sold must be dangerous to an extent beyond that which would be contemplated by the ordinary consumer who purchases it, with the ordinary knowledge common in the community as to its characteristics.”
Whether concern is with one or both of the requirements, there is “general” agreement that to prove liability under § 402A the plaintiff must show that the product was dangerous beyond the expectation of the ordinary customer. State-of-art evidence helps to determine the expectation of the ordinary consumer. A consumer would not expect a Model T to have the safety features which are incorporated in automobiles made today. The same expectation applies to airplanes. Plaintiffs have not shown that the ordinary consumer would expect a plane made in 1952 to have the safety features of one made in 1970. State-of-art evidence was properly received and considered by the trial court.
The situation with which we are concerned is somewhat similar to the “second-