{"data":{"id":"us/14-cfr-450.151","jurisdiction":"us","citation":"14 CFR 450.151","heading":"Work shift and rest requirements.","body":"(a) General. For any launch or reentry, an operator must document and implement rest requirements that ensure safety-critical personnel are physically and mentally capable of performing all assigned tasks.\n(b) Work shifts and deviation approval process. An operator's rest requirements must address the following:\n(1) Duration of each work shift and the process for extending this shift, including the maximum allowable length of any extension;\n(2) Number of consecutive work shift days allowed before rest is required;\n(3) Minimum rest period required—\n(i) Between each work shift, including the period of rest required immediately before the flight countdown work shift; and\n(ii) After the maximum number of work shift days allowed; and\n(4) Approval process for any deviation from the rest requirements.\n(c) Application requirement. An applicant must submit rest rules that demonstrate compliance with the requirements of this section.","path":["Title 14—Aeronautics and Space","CHAPTER III—COMMERCIAL SPACE TRANSPORTATION, FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—LICENSING","PART 450—LAUNCH AND REENTRY LICENSE REQUIREMENTS","Subpart C—Safety Requirements"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-14.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:20Z","sha256":"87842ba44611aa5446c0aa364bdf96cb7ee0606c2b2fba83faf11e0766456cec","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-450.149","next":"us/14-cfr-450.153"},"notice":"GroundRules: Original legal text. Not legal advice."}