Under SAAT level 3 or lower and field elevation less than 4000 ft, what is the minimum runway length for CRJ-7?

• A. 5200 ft
• B. 5400 ft
• C. 5000 ft
• D. 5100 ft

Answer: (A)

The main idea here is that minimum runway length for landing is set by the aircraft’s landing performance under the given operating category and field conditions. For the CRJ-7, with SAAT level 3 or lower and field elevation under 4000 ft, the performance charts specify a minimum landing distance of 5,200 ft. This value ensures there’s enough stopping distance with standard braking and reversers under those conditions, including the assumed weight and configuration. Shorter distances would not meet the charted margin, while longer numbers aren’t needed as the minimum under this category. Keep in mind that at higher elevations or with higher SAAT levels, the required distance would increase due to reduced air density and performance.