# 14 CFR § 33.19: Durability

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-14-33.19

## Section

- **Citation:** 14 CFR § 33.19
- **Heading:** Durability
- **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 B—Design and Construction › General

## Text

(a) Engine design and construction must minimize the development of an unsafe condition of the engine between overhaul periods. The design of the compressor and turbine rotor cases must provide for the containment of damage from rotor blade failure. Energy levels and trajectories of fragments resulting from rotor blade failure that lie outside the compressor and turbine rotor cases must be defined.
(b) Each component of the propeller blade pitch control system which is a part of the engine type design must meet the requirements of §§ 35.21, 35.23, 35.42 and 35.43 of this chapter.
[Doc. No. 3025, 29 FR 7453, June 10, 1964, as amended by Amdt. 33-9, 45 FR 60181, Sept. 11, 1980; Amdt. 33-10, 49 FR 6851, Feb. 23, 1984; Amdt. 33-28, 73 FR 63346, Oct. 24, 2008]

## 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-14-33.19. Check the current official text before relying on it. Not legal advice.