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Thread: B737 isolation valve
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Old 17th Sep 2007, 16:31
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737OPR
 
Join Date: Dec 2006
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Nope, sorry, it does say to put in in open in the NP's, not auto!! That's so strange, switch in open or auto, it doesn't matter, because the valve is open anyways due to the fact that the packs are off for engine start.

Hence my question
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