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Thread: Airbus Noises
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Old 25th Oct 2002, 21:06
  #19 (permalink)  
fadec_primary_channel
 
Join Date: Jun 2001
Location: UK
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Can only answer q1 part a

The noise is the PTU as mentioned earlier,

It does a self test between engine starts, and also ops during gnd handling procedures, i.e. opening of the cargo doors!

Ta
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