(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;
(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.
(Approved by the Office of Management and Budget under control