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Thread: "Position error" of outflow valve B737-300/-500 (4th altimeter)
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Old 28th December 2009 | 09:17
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hetfield
 
Joined: Mar 2006
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From: Choroni, sometimes
There is another thing you have to think about.

Is the cabin alt indicator on 737 referring to 1013hp?
If not, you have to apply the local QNH correction.

Sorry not current on type.
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