Charts · Question 7 of 12
How are obstacles usually shown on the ICAO aeronautical chart 1:500 000?
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Answer
- C Elevation above sea level, followed by the height above ground in brackets
Explanation
Next to the obstacle symbol are the elevation of the top above mean sea level and, in brackets, the height above ground, both in feet. For comparison with the altimeter set to QNH, the elevation above sea level is what matters.