Hello.
The question says determine pressure altitude with an indicated altitude of 1380 ft msl with an altimeter setting of 28.22 at standard temperature.
a.3010 ft msl
b.2991 ft msl
c.2913 ft msl.
The answer is B
but how did they get to that answer. The answer break down says for 28.3 you must add 1533ft. For an altimeter setting of 28.2 add 1630. Using interpolation, you must subtract 20%….. I’m trying to figure out where did that’s 20% came from? You’re help will be appreciated!
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