14 CFR § 431.11
Additional license terms and conditions
July 13, 2020
The FAA may amend an RLV mission license at any time by modifying or adding license terms and conditions to ensure compliance with 51 U.S.C. Subtitle V, chapter 509, and applicable regulations.
[Doc. No. FAA-2012-0232, 77 FR 20533, Apr. 5, 2012]