Helicopter Association International
 Agusta, Model: A109A, A109A II, and A109C

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General
Maximum distance and altitude separation from noise-sensitive areas are the most effective means of noise abatement.
Control movement should be gradual and smooth. Noise exposure is:

  • lower behind than forward of the helicopter,
  • lower on the left side than on the right side of the helicopter,
  • lower to the sides of the flight path than directly underneath, and
  • lower upwind than downwind of the helicopter

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Helicopter Association International
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