Communication and Noise Hazard Survey of CH-47D Crewmembers.

Abstract

U.S. Army CH-47D cargo helicopter crewmembers are exposed to high levels of noise on a routine basis, yet must accomplish demanding missions which rely heavily on clear communication. This study looked at the auditory influences affecting communication by surveying 17 crewmembers of a CH-47D Army Reserve unit. Results revealed (1) noise levels that exceed other Army rotary-winged aircraft, (2) different exposure levels for aviators and crew chiefs, (3) an overall preference to hear 'critical or diagnostic' aircraft sounds rather than wear double hearing protection, (4) complaints of postflight tinnitus or muffled hearing, (5) helmet discomfort among the majority of crewmembers (6) a high incidence of hearing loss, (7) difficulties in adjusting radio volume controls for aviators, and (8) the effects of eyeglasses or protective masks on hearing and communications. (AN)

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1995
Accession Number
ADA302172

Entities

People

  • Barbara A. Murphy
  • Ben T. Mozo
  • John E. Ribera
  • Kevin T. Mason

Organizations

  • United States Army Aeromedical Research Lab

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Air Traffic
  • Air Traffic Controllers
  • Aircrafts
  • Auxiliary Power Units
  • Diseases And Disorders
  • Eyeglasses
  • Frequency
  • Frequency Bands
  • Hearing Disorders
  • Hearing Loss
  • Hearing Protection
  • Human Factors Engineering
  • Masks
  • Measurement
  • Protective Masks
  • Rotary Wing Aircraft
  • Tinnitus

Readers

  • Acoustics.
  • Auditory Neuroscience/Auditory Physiology.
  • Aviation Science / Aeronautics.