# 14 CFR § 33.8: Selection of engine power and thrust ratings

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-14-33.8

## Section

- **Citation:** 14 CFR § 33.8
- **Heading:** Selection of engine power and thrust ratings
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 14—Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER C—AIRCRAFT > PART 33—AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES > Subpart A—General

## Text

(a) Requested engine power and thrust ratings must be selected by the applicant.
(b) Each selected rating must be for the lowest power or thrust that all engines of the same type may be expected to produce under the conditions used to determine that rating.
[Amdt. 33-3, 32 FR 3736, Mar. 4, 1967]

## Nearby sections

- [14 CFR § 33.1 § 33.1 Applicability.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.1.md)
- [14 CFR § 33.3 § 33.3 General.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.3.md)
- [14 CFR § 33.4 § 33.4 Instructions for Continued Airworthiness.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.4.md)
- [14 CFR § 33.5 § 33.5 Instruction manual for installing and operating the engine.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.5.md)
- [14 CFR § 33.7 § 33.7 Engine ratings and operating limitations.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.7.md)
- [14 CFR § 33.8 § 33.8 Selection of engine power and thrust ratings.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.8.md)
- [14 CFR § 33.11 § 33.11 Applicability.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.11.md)
- [14 CFR § 33.15 § 33.15 Materials.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.15.md)
- [14 CFR § 33.17 § 33.17 Fire protection.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.17.md)
- [14 CFR § 33.19 § 33.19 Durability.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.19.md)
- [14 CFR § 33.21 § 33.21 Engine cooling.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.21.md)
- [14 CFR § 33.23 § 33.23 Engine mounting attachments and structure.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.23.md)
- [14 CFR § 33.25 § 33.25 Accessory attachments.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.25.md)
- [14 CFR § 33.27 § 33.27 Turbine, compressor, fan, and turbosupercharger rotor overspeed.](https://www.frixlaw.com/law-library/statutes/ecfr-14-33.27.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-14-33.8. Check the current official text before relying on it. Not legal advice.