# 14 C.F.R. § 91.803 (2026): Part 125 operators: Designation of applicable regulations

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T14_P91_S91_803

## Section

- **Citation:** 14 C.F.R. § 91.803 (2026)
- **Heading:** Part 125 operators: Designation of applicable regulations
- **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 / § 91.803: § 91.803   Part 125 operators: Designation of applicable regulations.

## Text

For airplanes covered by this subpart and operated under part 125 of this chapter, the following regulations apply as specified:
(a) For each airplane operation to which requirements prescribed under this subpart applied before November 29, 1980, those requirements of this subpart continue to apply.
(b) For each subsonic airplane operation to which requirements prescribed under this subpart did not apply before November 29, 1980, because the airplane was not operated in the United States under this part or part 121, 129, or 135 of this chapter, the requirements prescribed under § 91.805 of this subpart apply.
(c) For each supersonic airplane operation to which requirements prescribed under this subpart did not apply before November 29, 1980, because the airplane was not operated in the United States under this part or part 121, 129, or 135 of this chapter, the requirements of §§ 91.819 and 91.821 of this subpart apply.
(d) For each airplane required to operate under part 125 for which a deviation under that part is approved to operate, in whole or in part, under this part or part 121, 129, or 135 of this chapter, notwithstanding the approval, the requirements prescribed under paragraphs (a), (b), and (c) of this section continue to apply.
[Docket 18334, 54 FR 34321, Aug. 18, 1989, as amended by Amdt. 91-276, 67 FR 46571, July 15, 2002]

## 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_803. Check the current official text before relying on it. Not legal advice.