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Thread: Why do A319s make a buzzing noise?
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Old Jan 14, 2021 | 10:08 pm
  #4  
mkorpal3333
 
Join Date: Oct 2018
Posts: 21
It's complex, but essentially the fan blades at takeoff power are moving at a supersonic speed and create a shockwave.

And it's not unique just to the A320 family.
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