← Search the regulations ·Rules in plain English

14 CFR · PART 91

§ 91.817 Civil aircraft sonic boom.

Official text · Current as of Oct 19, 2026 · from eCFR

(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 in accordance with § 91.818.

(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 in accordance with § 91.818.

[Docket 18334, 54 FR 34321, Aug. 18, 1989, as amended by Amdt. 91-362, 86 FR 3792, Jan. 15, 2021]

← § 91.815 § 91.818 →
Open on eCFR

ACE rules page: Part 91 in plain English

Not legal advice. This is the official text as published in the eCFR, which is updated daily but is not the legal edition. For legal purposes, use the annual Code of Federal Regulations or ask an aviation attorney.

All pages

Loading…