General

  1. Law
  2. CFR 14
  3. Aeronautics and Space
  4. Federal Aviation Administration, Department of Transportation
  5. Aircraft
  6. Airworthiness Standards: Normal Category Rotorcraft
  7. Powerplant
  8. General

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Section
27.901

Installation.

Section
27.903

Engines.

Section
27.907

Engine vibration.