Instruments

Airspeed Indicator(ASI)

Definition

An instrument measuring indicated airspeed by comparing pitot (dynamic plus static) pressure with static pressure. Color-coded arcs show V-speed ranges: white (flaps), green (normal), yellow (caution), red line (VNE).

Why Airspeed Indicator Matters for Pilots

Instrument knowledge is tested on every pilot certificate exam. Understanding how Airspeed Indicator works helps you interpret cockpit information correctly and recognize instrument failures before they become emergencies. This knowledge is especially critical for instrument-rated pilots flying in reduced visibility.

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Exam Tip

This concept is commonly tested in instruments-related questions on FAA and EASA exams. Make sure you can explain Airspeed Indicator in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.

Related Terms

Pitot Tube

A forward-facing tube that measures dynamic pressure (ram air) used to calculate...

Static Port

An opening in the aircraft skin that senses ambient atmospheric pressure for the...

V-Speeds

Designated airspeeds important to the operation of an aircraft, typically shown ...

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