10 C.F.R. § 71.64
(a) A package for the shipment of plutonium by air subject to § 71.88(a)(4), in addition to satisfying the requirements of §§ 71.41 through 71.63, as applicable, must be designed, constructed, and prepared for shipment so that under the tests specified in -
(1) Section 71.74 (“Accident conditions for air transport of plutonium”) -
(b) With respect to the package requirements of paragraph (a), there must be a demonstration or analytical assessment showing that -
(1) The results of the physical testing for package qualification would not be adversely affected to a significant extent by -