Which condition is commonly addressed by using a displaced threshold?

• A. Obstructions in the approach path.
• B. Seasonal heat waves.
• C. Ground crew break times.
• D. Airport terminal gate assignments.

Answer: (A)

A displaced threshold is used to address obstructions in the approach path. By moving the landing touchdown point down the runway, pilots can touch down beyond those obstacles while still maintaining the necessary obstacle clearance along the approach. The portion of runway before the displaced threshold isn’t available for touchdown in the landing direction, but it can be used for taxiing, for takeoff, and for rollout when arriving from the opposite direction. Other factors like seasonal heat, crew break times, or gate assignments don’t affect where the landing threshold is placed, so they aren’t addressed by a displaced threshold.