What can be inferred when the altimeter displays a low reading?

When the altimeter displays a low reading, it typically indicates that the aircraft is at a low altitude. The altimeter works by measuring atmospheric pressure; as an aircraft ascends, the atmospheric pressure decreases, and vice versa. Therefore, a low altimeter setting signifies that the aircraft is closer to sea level or at a lower altitude than the standard reference altitude.

Understanding how the altimeter functions is crucial for pilots as it provides essential information for safe flying practices, particularly during takeoffs and landings. This low reading should prompt pilots to consider the surrounding terrain and airspace to ensure they maintain safe separation from the ground and other aircraft.