Innovative Hearing Protection Device for Student Pilots

Abstract

Exposure to excessive noise levels is a significant concern in aviation. Aircraft engines and ground operations contribute to noise levels that often exceed occupational safety limits, posing a risk of noise-induced hearing loss (NIHL). While hearing protection devices (HPDs) are commonly recommended to mitigate these risks, student pilots (SP) face a unique challenge: the necessity of clear verbal communication with instructors often preventing them from using conventional ear protection. By evaluating potential solutions such as active noise reduction (ANR) technology and alternative communication systems, this research aims to improve hearing conservation strategies in aviation training environments. We have been monitoring decibels on the ramp and the frequencies students can hear. We have found that the frequencies heard by students have been unaffected, whereas in the past, higher frequencies have been heard less. This project intends to modify existing earplug devices to enhance their functionality. The customization is designed to selectively attenuate aircraft and ramp noise while preserving speech intelligibility between the SP and CFI. The customized device achieves this by filtering out high-intensity ramp noise while allowing speech frequencies to remain audible. In conclusion, the flight line is an environment where appropriate ear protection is a necessity to prevent any long-term hearing damage. By taking measures to reduce the frequency at which students are exposed to noise, instances of noise-induced hearing loss in flight students and other personnel can be prevented