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Thread: "Position error" of outflow valve B737-300/-500 (4th altimeter)
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Old 28th Dec 2009, 09:07
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Cough
 
Join Date: Jul 2000
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Flying with packs on and outflow valve open at FL80 indicates about 83 at 250 kt, but just over 90 at 330kt. Once low, fly slow to compensate.

(found when positioning an aircraft back to base with an inop outflow valve which was secured open)
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