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  4. Part 27
  5. § 27.391
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14 CFR · Part 27

14 CFR § 27.391

General.

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Read in Subpart C
Part 27 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 27: Instructions for Continued Airworthiness
  • Appendix B to Part 27: Airworthiness Criteria for Helicopter Instrument Flight
  • Appendix C to Part 27: Criteria for Category A
  • Appendix D to Part 27: HIRF Environments and Equipment HIRF Test Levels

Each auxiliary rotor, each fixed or movable stabilizing or control surface, and each system operating any flight control must meet the requirements of §§ 27.395, 27.397, 27.399, 27.411, and 27.427.

Regulations Referenced

14 CFR 27.39514 CFR 27.39714 CFR 27.39914 CFR 27.411

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 27)