Why do planes make a whining sound?

The high pitched whine tends to come from planes where the high-speed jet exhaust is relatively uninsulated from the ambient air. The 727 was a classic example of this kind of extremely noisy jet. The same tends to be true of military jets and small business jets.



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Aircraft noise at high levels can be considered a stressor on the body, and research has found an association between high levels of aircraft noise and an increased risk of developing Cardiovascular disease (CVD).

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Airplane noise can be very annoying, especially if you live or work near an airport, and you should know that experiencing that noise constantly can be bad for your health. Some of the negative side effects include high blood pressure, increased risk of stroke and increased risk of heart attack.

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During the day, when the air is warmer than the ground, noise energy from an airplane staying in the air, so while you can still hear it, it seems quieter. Conversely, at night, when the ground is warmer than the air, the noise is drawn down, making it seem louder.

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Departures tend to be louder than arrivals since the pilot is using more power to the engine to achieve lift.

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Over the past 50 years, aircraft have reduced their noise output by 75% and this progress continues. Today's aircraft entering service have on average, a noise footprint that is 30-50% that of the aircraft they are replacing thanks to new engine and airframe design and technology.

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When deciding either window or aisle seat, the window is found to be the loudest on the plane. While aisle seats are quieter, do note there's also a higher chance that other passengers from the inner seats might interrupt you if they need to go to the washroom.

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Meanwhile, one single tone means that a passenger is trying to get help from a flight attendant. This is the sound you'll hear if you press the “call” button at your seat. Three tones mean an emergency, Cimato says.

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And then there's the chime that, hopefully, you'll never have to hear: three high-low chimes, which signals an emergency situation.

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Onboard Ambience: Five Airliners That Are Known For Their Quiet Cabins
  1. 1 Airbus A380.
  2. 2 Boeing 787 Dreamliner. ...
  3. 3 Airbus A350. ...
  4. 4 Embraer E-Jets E2. ...
  5. 5 Airbus A220. The Airbus A220, formerly known as the Bombardier CSeries, is the quietest aircraft in its class by 50 dBA. ...


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Turbulence from Convection Currents and Obstructions. Convection currents cause the bumpiness experienced by pilots flying at low altitudes in warmer weather. On a low flight over varying surfaces, the pilot will encounter updrafts over pavement or barren places and downdraft over vegetation and water.

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Yes, travelers have the right to quiet, but it's an implied right, and one enforced by the good manners of your fellow passengers and guests.

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Accident statistics suggest that flying by night accounts for about 10% of the general aviation accidents, but 30% of the fatalities. That suggests night flying must be inherently more dangerous than aviating when the sun is up.

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Night flying restrictions or night-time curfews, including night flight bans, are any regulations or legislation imposed by a governing body to limit the ground-perceived exposure to aircraft noise pollution during the night hours, when the majority of residents are trying to sleep.

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Take-off and landing are the loudest moments, when noise levels inside the cabin can reach 105 decibels (dB). At cruising altitudes, noise drops to around 85 dB, says Pamela Mason of the American Speech-Language-Hearing Association (ASHA). Long exposure to 85 dB can cause temporary hearing problems.

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Protecting Ears When on a Plane Exposure to noise at 85 dB for more than eight hours a day can cause permanent hearing loss or temporary hearing problems like tinnitus (2). However, at 100 dB, the safe duration of exposure is only 15 minutes a day (3).

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