Instrument Refresher Course (IRC) Practice Test

Question: 1 / 425

What is the significance of adjusting to the local altimeter setting before descent?

It ensures the aircraft is properly calibrated for landing

Adjusting to the local altimeter setting before descent is crucial because it ensures the aircraft's altimeter accurately reflects the true altitude above sea level. This calibration is essential for safe landing, as the altimeter reading directly influences how high the aircraft thinks it is above ground level. If an incorrect setting is used, it could lead to altitude miscalculations, potentially causing the aircraft to be too high or too low during landing, which could result in dangerous situations such as hard landings or runway overruns.

While other factors like flight controls and regulatory requirements do play a role in flying, the primary and most critical reason for adjusting the altimeter is to ensure accurate altitude measurements for safe operation and successful landings. This practice contributes directly to aviation safety, making it a foundational aspect of flight operations.

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It helps in personalizing flight controls

It provides a safety margin during landing

It is a regulatory requirement only

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