Noise


Workplace “Noise” is rated as the third highest (58%) environmental factor affecting job performance. (Temperature and humidity were ranked 1 and 2, respectively.) High sound volumes are an unavoidable by- product of aviation.


Airport noise should be avoided or hearing protection should be utilized whenever possible. Long-term exposure to noises causes short-term and chronic fatigue, along with other long-term disabilities.


Vibration


Vibration fatigue of electronics, metals, and humans is of great concern in aviation. The service life of expensive avionics and instruments is shortened considerably when the equipment is operated in a high vibration environment. This vibration does humans no good, either!


Excess and unwanted aircraft vibration can cause discomfort and fatigue for the flight crew and passengers. While limiting aircraft vibration proves to be difficult, one must be aware and limit other vibration activities which act to compound fatigue. It probably wouldn’t be a good idea to operate a jackhammer for a few hours, then work a six hour flight.


Lighting


Extremes of anything aren’t necessarily good -- lighting included. Low light levels cause physical and mental fatigue due to the extra work necessary trying to function under those conditions. Alternatively, the typical high-gloss, of the hangar, paired with the bright white aircraft, under the bright white lights, increases the physical stresses and increases fatigue.


CRM 2, TEM, Fatigue 22


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