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EPNdB

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AcronymDefinition
EPNdBEffective Perceived Noise in Decibels


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The FAA standard for aircraft noise is the EPNdB (or effective perceived noise dB--a measure that is weighted to reflect the particular range of sounds generated by aircraft).
The exterior noise level of the Q400 is 10 EPNdB (Exterior Perceived Noise in Decibels) lower than that of 70- to 80-seat jets.
 
 
 
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