For Beechjet 400A, the maximum allowable fuel unbalance for landing is:

For Beechjet 400A, the maximum allowable fuel unbalance for landing is:

• A. 100 pounds
• B. 200 pounds
• C. 300 pounds
• D. 400 pounds

Answer: (C)

Fuel balance between the left and right wing tanks creates a sideways shift in the airplane’s weight (lateral CG). This produces a yawing moment that the rudder has to counter. In the Beechjet 400A, the landing configuration—low speed, high lift, extended gear and flaps—makes the aircraft more sensitive to that yaw. Limiting the fuel unbalance to 300 pounds ensures there is still adequate rudder authority and stable directional control through the final approach, flare, and touchdown. If the imbalance were greater, the aircraft could yaw toward the heavier wing, making a safe landing more difficult. So, the maximum allowable fuel unbalance for landing is 300 pounds.

Fuel balance between the left and right wing tanks creates a sideways shift in the airplane’s weight (lateral CG). This produces a yawing moment that the rudder has to counter. In the Beechjet 400A, the landing configuration—low speed, high lift, extended gear and flaps—makes the aircraft more sensitive to that yaw. Limiting the fuel unbalance to 300 pounds ensures there is still adequate rudder authority and stable directional control through the final approach, flare, and touchdown. If the imbalance were greater, the aircraft could yaw toward the heavier wing, making a safe landing more difficult. So, the maximum allowable fuel unbalance for landing is 300 pounds.