# 14 C.F.R. § 33.23 (2026): Engine mounting attachments and structure

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_23

## Section

- **Citation:** 14 C.F.R. § 33.23 (2026)
- **Heading:** Engine mounting attachments and structure
- **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 33: AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES / Subpart B: Design and Construction › General / § 33.23: § 33.23   Engine mounting attachments and structure.

## Text

(a) The maximum allowable limit and ultimate loads for engine mounting attachments and related engine structure must be specified.
(b) The engine mounting attachments and related engine structure must be able to withstand—
(1) The specified limit loads without permanent deformation; and
(2) The specified ultimate loads without failure, but may exhibit permanent deformation.
[Amdt. 33-10, 49 FR 6851, Feb. 23, 1984]

## Nearby sections

- [14 C.F.R. § 33.11 (2026) § 33.11   Applicability.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_11.md)
- [14 C.F.R. § 33.15 (2026) § 33.15   Materials.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_15.md)
- [14 C.F.R. § 33.17 (2026) § 33.17   Fire protection.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_17.md)
- [14 C.F.R. § 33.19 (2026) § 33.19   Durability.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_19.md)
- [14 C.F.R. § 33.21 (2026) § 33.21   Engine cooling.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_21.md)
- [14 C.F.R. § 33.23 (2026) § 33.23   Engine mounting attachments and structure.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_23.md)
- [14 C.F.R. § 33.25 (2026) § 33.25   Accessory attachments.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_25.md)
- [14 C.F.R. § 33.27 (2026) § 33.27   Turbine, compressor, fan, and turbosupercharger rotor overspeed.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_27.md)
- [14 C.F.R. § 33.28 (2026) § 33.28   Engine control systems.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_28.md)
- [14 C.F.R. § 33.29 (2026) § 33.29   Instrument connection.](https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_29.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T14_P33_S33_23. Check the current official text before relying on it. Not legal advice.