Altimeter Setting(QNH)
Definition
The barometric pressure adjusted to sea level used to set the altimeter so it reads field elevation on the ground. Regional QNH is used below transition altitude. Standard setting 1013.25 hPa is used above.
Why Altimeter Setting Matters for Pilots
Weather concepts like Altimeter Setting appear frequently on both FAA and EASA knowledge exams. More importantly, understanding Altimeter Setting helps pilots make sound go/no-go decisions and avoid hazardous conditions in flight. Weather-related accidents remain a leading cause of general aviation incidents.
Exam Tip
This concept is commonly tested in meteorology-related questions on FAA and EASA exams. Make sure you can explain Altimeter Setting in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
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