Section 420.59 - Mishap plan(a)General. A licensee must report, respond to, and investigate any event that meets either paragraph (1) or (5) of the definition of "mishap" in § 401.7 of this chapter. A licensee must submit a mishap plan that meets the requirements of § 450.173(b) through (f) .(b)Launch mishaps. A launch site operator's mishap plan must also contain procedures for participating in an investigation of a launch mishap for launches launched from the launch site.(c)Other agency procedures. Emergency response and investigation procedures developed in accordance with 29 CFR 1910.119 and 40 CFR part 68 will satisfy the requirements of § 450.173(d) and (e) to the extent that they include the elements required by § 450.173(d) and (e) .Doc. No. FAA-2019-0229, Amdt. 420-9, 85 FR 79716 , Dec. 10, 2020