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Thread: B747 Back up Hydraulics
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Old 24th Sep 2008, 15:07
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Intruder
 
Join Date: May 2000
Location: Seattle
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Electric vs air-driven pumps were/are options on the 747. All our Classics have 4 air-driven pumps. Our 744s have 2 air-driven and 2 electric pumps.
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