FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

Question: 1 / 1030

What does a radar altimeter determine?

Weather conditions

Altitude by transmitting a signal and receiving back a reflected signal

A radar altimeter determines the altitude of an aircraft by transmitting a radio signal towards the ground and measuring the time it takes for the signal to be reflected back. This reflected signal is used to calculate the distance between the aircraft and the ground directly below it. This information is crucial for the pilot as it provides precise and real-time altitude above ground level, especially during low-altitude flight operations.

The other options are incorrect because:

- Weather conditions are typically determined by other instruments such as weather radar.

- The speed of the aircraft is usually measured by an airspeed indicator or a GPS system.

- The location of the aircraft is determined by a combination of GPS, inertial navigation systems, and other navigation aids.

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Speed of the aircraft

Location of the aircraft

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