Private Pilot Private Exam

Why is it important to adjust the altimeter when changing flight locations?

1. To ensure accurate altitude readings

2. To reduce fuel consumption

3. To increase maximum flying speed

4. To avoid turbulence

The correct answer is: To ensure accurate altitude readings

Adjusting the altimeter when changing flight locations is crucial for ensuring accurate altitude readings. The altimeter measures the atmospheric pressure and translates that into altitude above sea level. Since atmospheric pressure can vary significantly based on weather conditions and geographical location, failing to adjust the altimeter can lead to incorrect altitude readings, which can pose serious safety risks. When pilots enter a new airspace, particularly if they are ascending or descending, they must set their altimeter to the current local altimeter setting provided by air traffic control or found in weather reports. This practice ensures that the aircraft maintains the correct altitude relative to the terrain and nearby aircraft, enhancing safety and operational efficiency. Accurate altitude readings are fundamental in maintaining a safe distance from the ground and avoiding controlled airspace violations. Hence, adjusting the altimeter directly influences flight safety and navigation accuracy.