A displaced threshold affects which portion of the runway in landings?

A displaced threshold affects which portion of the runway in landings?

• A. The area before the displaced threshold is not available for landings
• B. The area after the displaced threshold is not available for landings
• C. The entire runway is not available
• D. No portion is affected

Answer: (A)

A displaced threshold moves the start of the landing zone down the runway. The pavement before that new threshold line is not used for landings, even though it exists for other operations. It can be used for takeoff runs and for taxiing, but approaches must touchdown beyond the displaced threshold. That’s why landings are restricted to the portion of runway after the displaced threshold. The area after the threshold remains available for landing, so only the pre-threshold segment is affected for landing operations.

A displaced threshold moves the start of the landing zone down the runway. The pavement before that new threshold line is not used for landings, even though it exists for other operations. It can be used for takeoff runs and for taxiing, but approaches must touchdown beyond the displaced threshold. That’s why landings are restricted to the portion of runway after the displaced threshold. The area after the threshold remains available for landing, so only the pre-threshold segment is affected for landing operations.