Section 450.121 - Debris analysis(a)General. A flight safety analysis must include an analysis characterizing the hazardous debris generated from normal and malfunctioning vehicle flight as a function of vehicle flight sequence.(b)Vehicle impact and breakup analysis. A debris analysis must account for: (1) Each reasonably foreseeable cause of vehicle breakup and intact impact,(2) Vehicle structural characteristics and materials, and(3) Energetic effects during break-up or at impact.(c)Propagation of debris. A debris analysis must compute statistically valid debris impact probability distributions. The propagation of debris from each predicted breakup location to impact must account for-(1) All foreseeable forces that can influence any debris impact location; and(2) All foreseeable sources of impact dispersion, including, at a minimum:(i) The uncertainties in atmospheric conditions;(ii) Debris aerodynamic parameters, including uncertainties;(iii) Pre-breakup position and velocity, including uncertainties; and(iv) Breakup-imparted velocities, including uncertainties.(d)Application requirements. An applicant must submit: (1) A description of all scenarios that can lead to hazardous debris;(2) A description of the methods used to perform the vehicle impact and breakup analysis, in accordance with § 450.115(c) ;(3) A description of the methods used to compute debris impact distributions, in accordance with § 450.115(c) ;(4) A description of the atmospheric data used as input to the debris analysis; and(5) A quantitative description of the physical, aerodynamic, and harmful characteristics of hazardous debris.