flight instrumentsFAA-published sample question (FIA, Aug 2021)
Under what condition is indicated altitude the same as true altitude?
A
If the altimeter has no mechanical error.
B
When at sea level under standard conditions.✓ Correct Answer
C
When at 18,000 feet MSL with the altimeter set at 29.92.
Explanation
The altimeter is calibrated to the standard atmosphere, so indicated altitude equals true altitude only when standard conditions exist, for example at sea level under standard conditions. An error-free instrument still misreads in nonstandard air, and setting 29.92 at 18,000 feet gives pressure altitude.
Related flight instruments questions
What should be the indication on the magnetic compass as you roll into a standard rate turn to the r...What is true altitude?What is pressure altitude?What is the first fundamental skill in attitude instrument flying?What is the correct sequence in which to use the three skills used in instrument flying?
Keep practising
Study more FAA Flight Instructor questions, or take a timed practice quiz.