The radio altimeter is required to indicate zero height AGL as the main wheels touch down on the runway. For this reason, it is necessary to:

Question

Question ATPL - Airline Transport Pilot license - Aircraft General Knowledge - Instrumentation

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Compensate for residual height and cable length.

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Have a specific radio altimeter dedicated to automatic landing.

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Adjust the gross height according to the aircraft instantaneous pitch.

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Change the display scale in short final, in order to have a precise readout.

Id 36 - ATPL - The radio altimeter is required to indicate zero height AGL as the main wheels touch down on the runway. For this reason, it is necessary to: