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Part 29
§ 29.303

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14 CFR · Part 29

14 CFR § 29.303

Factor of safety.

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Read in Subpart C

Part 29 Contents

Subpart A: General
Subpart B: Flight
Subpart C: Strength Requirements
Subpart D: Design and Construction
Subpart E: Powerplant
Subpart F: Equipment
Subpart G: Operating Limitations and Information
Appendix A to Part 29: Instructions for Continued Airworthiness
Appendix B to Part 29: Airworthiness Criteria for Helicopter Instrument Flight
Appendix C to Part 29: Icing Certification
Appendix D to Part 29: Criteria for Demonstration of Emergency Evacuation Procedures Under § 29.803
Appendix E to Part 29: HIRF Environments and Equipment HIRF Test Levels

Unless otherwise provided, a factor of safety of 1.5 must be used. This factor applies to external and inertia loads unless its application to the resulting internal stresses is more conservative.

Reflects the eCFR edition current as of September 29, 2026. Retrieved from ecfr.gov on October 16, 2026.

Primary Source

Official Source (14 CFR · Part 29)