flight instrumentsFAA-published question bank (Private Pilot, 2008)
If it is necessary to set the altimeter from 29.15 to 29.85, what change occurs?
A
70-foot increase in indicated altitude.
B
70-foot increase in density altitude.
C
700-foot increase in indicated altitude.✓ Correct Answer
Explanation
Raising the setting from 29.15 to 29.85 is an increase of 0.70 inch of mercury; at about 1,000 feet per inch, the indicated altitude increases by about 700 feet. Changing the altimeter setting has no effect on density altitude, which depends on the actual air.
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