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3. Altitude Pressure Switch

Part Family: Switch

Manufacturers: Altitude pressure switches are manufactured by Zodiac, Textron, Hawker Beechcraft, Bombardier, etc.

Functionality of Altitude Pressure Switches:

Altitude pressure switches are used to determine the altitude of and in the aircraft. These switches contain a capsule which responds to changes in the altitude. When altitude increases, the capsule expands. When altitude decreases, the capsule contracts. This pressure change causes the switch to activate. These switches are crucial because they keep the pilot informed of the air pressure they are flying in, which can affect the performance of the aircraft as well as the pressure inside the cabin.

FSG: Altitude pressure switches categorized under FSG 59: Electrical and Electronic Equipment Components

FSC: Altitude pressure switches are categorized under FSC 5930: Switches

Common Applications

Each aircraft is equipped with an altitude pressure switch. These are necessary in order to have a safe flight. They are located in the cockpit on the pressure panel. The purpose of this switch is to monitor and keep the pressure inside the cabin as close to sea level as possible.

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