Title 14--Aeronautics and Space
CHAPTER I -- FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
SUBCHAPTER F -- AIR TRAFFIC AND GENERAL OPERATING RULES
PART 91 -- GENERAL OPERATING AND FLIGHT RULES
Special Federal Aviation Regulations
Subpart I - Operating Noise Limits
Sec. 91.817 Civil aircraft sonic boom.
(a) No person may operate a civil aircraft in the United States at a true
flight Mach number greater than 1 except in compliance with conditions and
limitations in an authorization to exceed Mach 1 issued to the operator under
appendix B of this part.
(b) In addition, no person may operate a civil aircraft for which the
maximum operating limit speed MM0 exceeds a Mach number of 1, to or from an
airport in the United States, unless--
(1) Information available to the flight crew includes flight limitations
that ensure that flights entering or leaving the United States will not cause
a sonic boom to reach the surface within the United States; and
(2) The operator complies with the flight limitations prescribed in
paragraph (b)(1) of this section or complies with conditions and limitations
in an authorization to exceed Mach 1 issued under appendix B of this part.