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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Aircraft General Knowledge - Instrumentation > During an approach, a radio altimeter indicates 950 ft. What is the reference for this indication?

51 - ATPL Question Bank in English - During an approach, a radio altimeter indicates 950 ft. What is the reference for this indication?

Question 51 - Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot Licence

The relative height of the aircraft above airport level (AAL).

The height of the pilot eyes with regard to the ground.

The relative height of the aircraft with regard to the runway.

The terrain directly beneath the aircraft, according to the radio-altimeter installation’s height calibration

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