What action should be taken when flying from the altimeter setting region into the standard pressure region?

When transitioning from an altimeter setting region into a standard pressure region, the correct action is to set the altimeter to 29.92 inches of mercury (HG). This is because the standard pressure setting is defined as 29.92 in HG, which is the reference pressure used in the aviation industry to ensure uniformity in the air traffic system, particularly at higher altitudes.

In this scenario, the altitude you're flying at could be affected by changes in atmospheric pressure. By setting the altimeter to the standard pressure, you ensure that your altitude readings are consistent with the altitudes reported by other aircraft and air traffic control. This is especially important for maintaining safe separation between aircraft in controlled airspace.

Once you set your altimeter to the standard pressure, you'll be able to accurately track your altitude as you continue through the different pressure regions. This practice is essential in ensuring safe flight operations and effective communication with air traffic control.