The Occupational Safety and Health Administration (OSHA) requires employers to provide workers with hearing protection if they are exposed to an 8-hour time-weighted average of 85 dBA or more. For those living or working near flight paths of major airports, the noise of aircraft taking off and landing can exceed 100 dBA, though exposure to these levels is for a limited time, an impact is still felt.
High levels of aircraft noise near major commercial airports are known to cause problems to the human body. Sounds louder than a normal conversation can damage the delicate hair cells in the inner ear. Initially damage may be temporary, but with repeated exposure, the damage becomes permanent.
Noise and Pollution as a by product of the aviation industry is not limited to just Air Travel, in 2013 Heathrow Airport reported more than 72 millions traffic vehicles, an average of just over 6 million per month.
Nearly a quarter of a million people live in the Borough of Hounslow and most of them suffer the effects of aircraft noise. With a plane taking off or landing every 60-90 seconds, Hounslow is overflown 75% of the time.