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JPI 900 manifold press vs. altimeter setting

Jim Peace

By Jim Peace
in Miscellaneous Aviation Talk

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Jim Peace Grand Master

Jim Peace

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Just had installed a JPI 900.  Have not flown it yet.  I notice that the MAP is 30.6 engine off and the altimeter at the sea level airport was about 30.30

I know about the chart in the installation manual that gives correction numbers for many altitudes above sea level. Mechanic and technician will look at it in the morning.

Just want to be sure form this knowledgeable group that at sea level if the altimeter setting is 30.30 then my MAP with the engine off should be about 30.30 and not 30.6.

 

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