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Noise Before Take Off - Airbus Mainly
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25th May 2009, 21:45
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Paracab
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Join Date: Oct 2003
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Hydraulic power transfer unit (PTU). Sounds like sawing or a dog barking. A quick search will provide a more thorough answer, this question is asked about once a week so better not take up much more bandwidth with it!
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Paracab
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