# 14 C.F.R. § 91.817 (2026): Civil aircraft sonic boom

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_817

## Section

- **Citation:** 14 C.F.R. § 91.817 (2026)
- **Heading:** Civil aircraft sonic boom
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 14 CFR: Aeronautics and Space / Chapter I: FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION / Part 91: GENERAL OPERATING AND FLIGHT RULES / Subpart I: Operating Noise Limits / § 91.817: § 91.817   Civil aircraft sonic boom.

## Text

(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 M
M0
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.
(Approved by the Office of Management and Budget under control number 2120-0005)
[Docket 18334, 54 FR 34321, Aug. 18, 1989, as amended by Amdt. 91-362, 86 FR 3792, Jan. 15, 2021]

## Nearby sections

- [14 C.F.R. § 91.801 (2026) § 91.801   Applicability: Relation to part 36.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_801.md)
- [14 C.F.R. § 91.803 (2026) § 91.803   Part 125 operators: Designation of applicable regulations.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_803.md)
- [14 C.F.R. § 91.805 (2026) § 91.805   Final compliance: Subsonic airplanes.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_805.md)
- [14 C.F.R. § 91.815 (2026) § 91.815   Agricultural and fire fighting airplanes: Noise operating limitations.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_815.md)
- [14 C.F.R. § 91.817 (2026) § 91.817   Civil aircraft sonic boom.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_817.md)
- [14 C.F.R. § 91.818 (2026) § 91.818   Special flight authorization to exceed Mach 1.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_818.md)
- [14 C.F.R. § 91.819 (2026) § 91.819   Civil supersonic airplanes that do not comply with part 36.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_819.md)
- [14 C.F.R. § 91.821 (2026) § 91.821   Civil supersonic airplanes: Noise limits.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_821.md)
- [14 C.F.R. § 91.851 (2026) § 91.851   Definitions.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_851.md)
- [14 C.F.R. § 91.853 (2026) § 91.853   Final compliance: Civil subsonic airplanes.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_853.md)
- [14 C.F.R. § 91.855 (2026) § 91.855   Entry and nonaddition rule.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_855.md)
- [14 C.F.R. § 91.857 (2026) § 91.857   Stage 2 operations outside of the 48 contiguous United States.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_857.md)
- [14 C.F.R. § 91.858 (2026) § 91.858   Special flight authorizations for non-revenue Stage 2 operations.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_858.md)
- [14 C.F.R. § 91.859 (2026) § 91.859   Modification to meet Stage 3, Stage 4, or Stage 5 noise levels.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_859.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_817. Check the current official text before relying on it. Not legal advice.