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What is the altitude at which the landing must be aborted if a runway is not in sight?

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What is the altitude at which the landing must be aborted if a runway is not in sight?

(a) Low altitude

(b) Decision height

(c) Abortion altitude

(d) Visibility altitude

This question was posed to me in an international level competition.

My question comes from Mechanics of Landing topic in portion Landing Systems & Air-Traffic Management of Avionics

1 Answer

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Best answer
Correct choice is (b) Decision height

To explain: During a landing, the decision height or DH is the height above the runway at which the landing must be aborted if the runway is not in sight. Usually, with better avionic systems and electronic aids, the DH can be lowered.

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