Instrument Rating Checkride Practice Test

Question: 1 / 400

What is the purpose of the altimeter in flight?

To measure the aircraft's speed

To calculate fuel remaining

To measure the aircraft's altitude above sea level

The primary purpose of the altimeter in flight is to measure the aircraft's altitude above sea level. It does this by utilizing changes in atmospheric pressure; as an aircraft ascends or descends, the pressure changes, which the altimeter interprets to provide a readout of altitude. This altitude information is crucial for maintaining safe separation from terrain and other aircraft, especially when flying in instrument conditions where visual references may not be available.

While other instruments in the aircraft provide critical data such as speed, fuel status, or vertical speed, the altimeter specifically focuses on altitude, making it an essential tool for navigation and safety during flight operations. Understanding altimeter readings helps pilots adhere to altitude restrictions and airspace requirements, significantly contributing to overall flight safety.

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To show the vertical speed of the aircraft

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