Section 437.71 - Flight rules(a) Before initiating flight, a permittee must confirm that all systems and operations necessary to ensure that safety measures derived from §§ 437.55 , 437.57 , 437.59 , 437.61 , 437.63 , 437.65 , 437.67 , and 437.69 are within acceptable limits.(b) During all phases of flight, a permittee must-(1) Follow flight rules that ensure compliance with §§ 437.55 , 437.57 , 437.59 , and 437.61 ; and(2) Abort the flight if it would endanger the public.(c) A permittee may not operate a reusable suborbital vehicle in a careless or reckless manner that would endanger any member of the public during any phase of flight.(d) A permittee may not operate a reusable suborbital vehicle in areas designated in a Notice to Airmen under 14 CFR 91.137 , 91.138 , 91.141 , or 91.145 , unless authorized by: (1) Air Traffic Control; or(2) A Flight Standards Certificate of Waiver or Authorization.(e) For any phase of flight where a permittee operates a reusable suborbital vehicle like an aircraft in the National Airspace System, a permittee must comply with the provisions of 14 CFR part 91 specified in an experimental permit issued under this part.