Aircraft noise pollution refers to noise produced by aircraft in flight that has been associated with several negative stress-mediated health effects, from sleep disorders to cardiovascular disorders. Governments have enacted extensive controls that apply to aircraft designers, manufacturers, and operators, resulting in improved procedures and cuts in pollution.
Noise-generating aircraft propeller
NASA researchers at Glenn Research Center measuring jet engine noise in 1967
Deployed landing gear and wing flaps of a 747
The APU exhaust on a Boeing 787 tail, with intake panel open
Noise pollution, or sound pollution, is the propagation of noise or sound with ranging impacts on the activity of human or animal life, most of which are harmful to a degree. The source of outdoor noise worldwide is mainly caused by machines, transport and propagation systems. Poor urban planning may give rise to noise disintegration or pollution, side-by-side industrial and residential buildings can result in noise pollution in the residential areas. Some of the main sources of noise in residential areas include loud music, transportation, lawn care maintenance, construction, electrical generators, wind turbines, explosions and people.
A Qantas Boeing 747-400 passes close to houses shortly before landing at London Heathrow Airport.
Traffic is the main source of noise pollution in cities like São Paulo, shown here.
Measuring the noise level from a leaf blower using the NIOSH Sound Level Meter app
The CityLink sound tube in Flemington, Melbourne, Australia, is designed to reduce roadway noise without detracting from the area's aesthetics.