If the altimeter is set to 28.92 instead of 28.82, what will be the actual altitude compared to indicated altitude?

When the altimeter is set to a value that is higher than the standard atmospheric pressure (in this case, setting it to 28.92 instead of 28.82), the altimeter will indicate a lower altitude than the actual altitude. This is because the altimeter measures the difference between the surrounding atmospheric pressure and a standardized setting.

In this scenario, if the altimeter is set to 28.92, which indicates a higher pressure than the actual pressure of 28.82, it will read a lower altitude. The pressure difference of 0.10 inches of mercury (Hg) generally corresponds to an approximation of 100 feet in altitude under typical atmospheric conditions. Therefore, the actual altitude would be higher than what the altimeter is indicating, leading to an altitude discrepancy where the aircraft is effectively 100 feet higher than what is displayed on the altimeter.

This concept is crucial for flight safety, as relying on incorrect altitude indications can lead to navigation errors.