Under SAAT level 3 or lower and field elevation less than 4000 ft, what is the minimum runway length for CRJ-2/9 and ERJ?

• A. 5000 ft
• B. 5200 ft
• C. 5400 ft
• D. 5600 ft

Answer: (A)

The key idea is how aircraft performance charts set a minimum runway length for takeoff and landing based on operating conditions. For CRJ-2/9 and ERJ under SAAT level 3 or lower and field elevation under 4000 ft, the published data indicate you can safely operate on a 5000 ft runway. Lower elevation helps performance because the air is denser, reducing required distances, and the SAAT level 3 or lower constraint keeps margins from becoming too tight, so the shorter length is permitted. If you were dealing with higher elevations or stricter SAAT levels, the charts would require longer runways, which is why options like 5200, 5400, or 5600 ft exist for other scenarios.