Terms and abbreviations · Question 30 of 63
What does the Q Code "QNH" mean?
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Answer
- B Altimeter sub-scale setting to obtain aerodrome elevation when on the ground
Explanation
QNH is the altimeter sub-scale setting that makes the altimeter read the aerodrome elevation above sea level after landing. In flight it then indicates altitude above mean sea level. The pressure at aerodrome elevation itself is the QFE.