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Title 14

Displaying title 14, up to date as of 7/09/2026. Title 14 was last amended 7/06/2026.
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Title 14Aeronautics and SpacePart / Section
Chapter IFederal Aviation Administration, Department of Transportation1 – 199
Subchapter CAircraft21 – 59
Part 33Airworthiness Standards: Aircraft Engines33.1 – 33.201
Subpart AGeneral33.1 – 33.8
§ 33.1Applicability.
§ 33.3General.
§ 33.4Instructions for Continued Airworthiness.
§ 33.5Instruction manual for installing and operating the engine.
§ 33.7Engine ratings and operating limitations.
§ 33.8Selection of engine power and thrust ratings.
Subpart BDesign and Construction; General33.11 – 33.29
Subpart CDesign and Construction; Reciprocating Aircraft Engines33.31 – 33.39
§ 33.31Applicability.
§ 33.33Vibration.
§ 33.34Turbocharger rotors.
§ 33.35Fuel and induction system.
§ 33.37Ignition system.
§ 33.39Lubrication system.
Subpart DBlock Tests; Reciprocating Aircraft Engines33.41 – 33.57
Subpart EDesign and Construction; Turbine Aircraft Engines33.61 – 33.79
Subpart FBlock Tests; Turbine Aircraft Engines33.81 – 33.99
Subpart GSpecial Requirements: Turbine Aircraft Engines33.201
§ 33.201Design and test requirements for Early ETOPS eligibility.
Appendix A to Part 33
Instructions for Continued Airworthiness
Appendix B to Part 33
Certification Standard Atmospheric Concentrations of Rain and Hail
Appendix C to Part 33 [Reserved]
Appendix D to Part 33
Mixed Phase and Ice Crystal Icing Envelope (Deep Convective Clouds)