25.785(b)(d)requires that transport category aircraft be designed to protect occupants from serious in-jury when subjected to emergency landing inertial forces.Based on the study of the relevant advisory circular and certification policy memorandum of FAA,combined with the compliance verification practice,this paper has com-pleted the analysis of the requirements of 25.785(b)(d)and sorted out of the consideration of compliance verifica-tion of 25.785(b)(d),and formed the means of compliance of 25.785(b)(d).It can be used as a reference for the design and compliance verification of transport category aircraft with respect to 25.785(b)(d).
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