Factored Landing Distance is calculated by multiplying Demonstrated Landing Distance by which factor?

• A. 1.67
• B. 2.00
• C. 1.50
• D. 1.25

Answer: (A)

Factored landing distance is the demonstrated landing distance adjusted upward with a safety margin to account for real-world variability. The standard margin used is 1.67, so you multiply the Demonstrated Landing Distance by 1.67 to get the factored distance. This higher value covers factors like weight, air temperature, wind, runway conditions, braking action, and pilot technique, giving a conservative estimate of the runway length needed to stop safely. For example, if the demonstrated distance is 2,000 ft, the factored distance becomes 2,000 × 1.67 = 3,340 ft. Other factors would either understate or overstate the required margin in common training contexts, whereas 1.67 is the conventional choice used to ensure adequate safety margin.