What is the landing ground roll distance with a 50-foot obstacle?

What is the landing ground roll distance with a 50-foot obstacle?

• A. 1,200 feet
• B. 980 feet
• C. 1,400 feet
• D. 1,800 feet

Answer: (A)

When a landing plan includes a 50-foot obstacle, you must account for the extra distance needed to clear that obstacle and then decelerate to a stop. The performance data for a typical light aircraft show that the landing ground roll after clearing a 50-foot obstacle is about 1,200 feet. This distance is measured from touchdown to final stop and reflects the added energy that must be dissipated to meet the obstacle clearance and bring the airplane to rest. Shorter distances would correspond to scenarios with no obstacle or unusually favorable conditions, while longer distances would imply more challenging conditions or a larger obstacle. So, 1,200 feet is the distance that best fits the 50-foot obstacle scenario.

When a landing plan includes a 50-foot obstacle, you must account for the extra distance needed to clear that obstacle and then decelerate to a stop. The performance data for a typical light aircraft show that the landing ground roll after clearing a 50-foot obstacle is about 1,200 feet. This distance is measured from touchdown to final stop and reflects the added energy that must be dissipated to meet the obstacle clearance and bring the airplane to rest. Shorter distances would correspond to scenarios with no obstacle or unusually favorable conditions, while longer distances would imply more challenging conditions or a larger obstacle. So, 1,200 feet is the distance that best fits the 50-foot obstacle scenario.