(a)Definitions. For the purposes of this subpart, the definitions of § 401.5 of this chapter apply.(b)Compliance with part 450 of this chapter. Operations under this part must comply with launch and reentry collision avoidance requirements in § 450.169 and critical asset protection requirements in § 450.101(a)(4) and (b)(4) .Doc. No. FAA-2019-0229, Amdt. 435-5, 85 FR 79718 , Dec. 10, 2020