An aircraft is landing on a runway with a displaced threshold. What action should be taken?

When an aircraft is landing on a runway with a displaced threshold, the appropriate action is to touch down before the threshold. A displaced threshold is an area at the beginning of a runway that cannot be used for landing purposes; it is usually marked with a line that indicates where the actual landing should take place. This designation often occurs due to obstacles or expanded safety areas.

By touching down before the displaced threshold, the pilot ensures a safer approach and landing, using the available runway length effectively. This approach allows for a complete stop within the designated landing area, complying with the runway's operational limitations and ensuring adherence to safety protocols. Therefore, the action of landing before the threshold aligns with standard operating procedures when dealing with runways featuring displaced thresholds.