Re: A320 and Noisy Hydraulic Pumps

From: (TriStar500)
Organization: America Online, Inc. (1-800-827-6364)
Date:         15 Apr 95 11:38:20 
References:   1
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>When the flaps were extended for landing, a much higher-pitched, but
>quieter pump seemed to be working. Are there different pumps for
>different control surfaces??

That was probably the gear box and hydraulic motor that power the flaps -
aft wall of the main wheel well.