Okla. Stat. tit. 12, § 109
No action in tort to recover damages
(iii) for injury to the person or for wrongful death arising out of any such deficiency,
shall be brought against any person owning, leasing, or in possession of such an improvement or performing or furnishing the design, planning, supervision or observation of construction or construction of such an improvement more than ten (10) years after substantial completion of such an improvement.
Laws 1967, SB 232, c. 360, § 1, emerg. eff. May 22, 1967; Amended by Laws 1978, HB 1615, c. 188, § 1, eff. October 1, 1978.