Altimeter

 High to low lookout below!


A high setting on the altimeter when going to a low setting area will indicate you are higher than you are:

The departure altimeter setting was 30.16 in Hg and the the destination setting is 29.91 in Hg

That is a difference of 0.25 inches which is 250 feet -- The altimeter is set too high so it will indicate too high

On landing the altimeter would indicate 432 + 250 feet = 682 feet


The correct answer is: 682 feet ASL.


If a pilot changes the altimeter setting from 30.11 in Hg to 29.96 in Hg, the altimeter will indicate 150 feet lower.

Manual or mechanical changing of the altimeter will change the altitude. If the setting increases the altitude will increase. If the setting decreases the altitude will decrease.

If a change in pressure happens, climbing or descending or flying into higher or lower pressure regions, then the altitude changes. In this case though the decrease in pressure (increase in altitude or flying into lower pressure) the altitude increases. If flying into increasing pressure (decrease in altitude or flying into higher pressure) the altitude will decrease.



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