How do you set altitudeQNH? - Answers

To set altitude QNH, first, obtain the current altimeter setting from a reliable source, such as air traffic control or a weather report. Then, adjust the altimeter in your aircraft to match the QNH value, which is typically given in inches of Mercury or hectopascals. This ensures that your altitude readings are accurate relative to sea level and helps maintain safe vertical separation from other aircraft. Always verify the setting before takeoff and during flight as conditions can change.