Threshold Crossing Height is a concept used in instrument approaches to determine crossing height relative to which glidepath reference?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Threshold Crossing Height is a concept used in instrument approaches to determine crossing height relative to which glidepath reference?

Explanation:
Threshold Crossing Height is the vertical reference used to describe where the instrument approach path crosses the runway threshold plane. It fixes the glidepath relative to the runway, giving a consistent crossing height at the threshold so the descent path meets landing constraints and obstacle clearance. This anchors the glidepath to the threshold itself, rather than to other factors like speed tables, engine thrust, or torque readings.

Threshold Crossing Height is the vertical reference used to describe where the instrument approach path crosses the runway threshold plane. It fixes the glidepath relative to the runway, giving a consistent crossing height at the threshold so the descent path meets landing constraints and obstacle clearance. This anchors the glidepath to the threshold itself, rather than to other factors like speed tables, engine thrust, or torque readings.

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