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Neonatal transport in fixed-wing aircraft exposes infants to excessive noise and vibration. Sound levels exceeded recommended limits, and vertical accelerations reached "very uncomfortable" levels, posing risks to vulnerable newborns.

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Area of Science:

  • Aerospace Medicine
  • Biomedical Engineering
  • Neonatal Care

Background:

  • Neonatal transport requires specialized systems, often within aircraft.
  • Aircraft environments expose these systems to significant vibration and sound.
  • Prolonged exposure to high sound and vibration levels can harm human health.

Purpose of the Study:

  • To quantify sound and vibration levels during neonatal transport.
  • To assess exposure within a Pilatus PC-12 fixed-wing aircraft.
  • To evaluate risks to vulnerable neonatal patients.

Main Methods:

  • Conducted a dedicated flight test in a Pilatus PC-12 aircraft.
  • Recorded acceleration and sound data in the cabin near the transport system.
  • Estimated patient motion using experimentally derived transfer functions.

Main Results:

  • Vertical vibration was the most significant factor.
  • Cabin floor and pilot seat motion were comparable (1-80 Hz).
  • Patient motion reached ISO 2631 "very uncomfortable" levels during turbulence.
  • Sound levels consistently exceeded recommended limits, peaking at 89.3 dBA.
  • Exceedances occurred across all flight phases, including landing.

Conclusions:

  • Measured sound levels surpassed recommended limits for neonatal transport.
  • Vertical accelerations reached levels deemed uncomfortable (ISO 2631).
  • These exposures pose potential risks to physiologically vulnerable neonates.
  • Data supports further laboratory testing and research into vibration mitigation.
  • Neonatal-specific whole-body vibration guidelines are essential.