Changes in hearing thresholds as measured by decibels of hearing loss in British Army Air Corps lynx and apache pilots.

Objective: Helicopter pilots are exposed to noise at work and are at risk of developing hearing loss in excess of that which naturally results from aging. We investigated whether Lynx pilots demonstrated changes to hearing thresholds that differed from Apache pilots.

Methods: Survey responses were combined with audiometric data from a retrospective cohort of 59 Lynx and 87 Apache pilots.

Ten years of spatial disorientation in U.S. Army rotary-wing operations.

Introduction: Spatial disorientation (SD) has plagued aviation since its inception, contributing to numerous lost lives, destroyed or damaged aircraft, and a reduction in operational mission effectiveness. Military rotary-wing (RW) operations are not immune. The U.

Survey of spatial disorientation in military pilots and navigators.

Background: The direction of future spatial disorientation (SD) research and training is shaped primarily by the outcome of formal investigation of aircraft accidents and incidents. However, another source of vital information is aircrews' experience of SD that does not result in reported incidents.

Methods: A short postal SD survey was distributed to 5 Naval Air Squadrons, 22 Joint Helicopter Command Units, and 7 Royal Air Force stations in the United Kingdom.