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# How many decibels is a passenger plane?

## How many decibels is a passenger plane?

A study of noise on Airbus A321 aircraft reported levels of 60-65 decibels (dBA) before takeoff; 80-85 dBA during flight; and 75-80 dBA during landing. The outside of aircraft engines (around 140 dB at takeoff) and conditions on other aircraft may have higher or lower noise levels.

## How many decibels do airplanes cause noise pollution?

Aircraft engines are the major source of noise and can exceed 140 decibels (dB) during takeoff. While airborne, the main sources of noise are the engines and the high speed turbulence over the fuselage. There are health consequences of elevated sound levels.

How many decibels is a 777?

I measured an average decibel level of about 75 when cruising in business class on a Boeing 777. That was fairly close to the wing-mounted engines. Farther up front was quieter. And the noise level at one of the rear exit doors behind the engines was about 80 on the same flight.

### Why do planes not sound at night?

The aeroplane uses the jet engines which are very heavy noise producing engines and crosses the mark of around 140 to 150 decibels. The reason behind they sound low at night because they produce relatively low power and they are instructed to use high altitude as night time is for sleep!!!!!

### Why are planes so loud at night?

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.

How loud is a plane at 8000 feet?

Typically aircraft noise is given in the context of certain types of aircraft flying at certain levels. However, this can be difficult to understand in practice….Illustrative videos.

Height in Feet Transiting
7000-8000 Boeing B772 at 7,000ft 52.8 dBA
8000-9000 Boeing B777-200 at 8,000ft 48.1 dBA

## How loud is a 747 taking off?

How Loud Is A 747 Jet Engine? There would be 165 decibels roaring out of a Boeing 747 as you stand with your head inside. There is no benefit of this; our human ear drum breaks after hearing sounds more than 160 decibels in intensity. There are around 140 decibels at takeoff if the airport is near you.