For ground operations, the maximum allowed difference between left and right tank quantities is what?

For ground operations, the maximum allowed difference between left and right tank quantities is what?

• A. 2,500 LBS
• B. 3,000 LBS
• C. 1,500 LBS
• D. 2,000 LBS

Answer: (A)

Fuel imbalance between the left and right tanks shifts the airplane’s center of gravity toward the heavier side. On the ground, this lateral CG shift can affect ground handling and steering, so a limit is set to keep handling predictable and to ensure the weight stays within the aircraft’s CG envelope as you taxi or prepare for takeoff. For the CRJ‑550, the maximum allowed difference between the left and right tank quantities during ground operations is 2,500 pounds. This provides tolerance for normal fueling and fuel burn while preventing a large, potentially problematic lateral CG shift. If the difference grows beyond this limit, you’d balance the tanks (or use crossfeed) before taxi or takeoff. Smaller or larger numbers would either unduly constrain operations or risk exceeding CG limits, respectively.

Fuel imbalance between the left and right tanks shifts the airplane’s center of gravity toward the heavier side. On the ground, this lateral CG shift can affect ground handling and steering, so a limit is set to keep handling predictable and to ensure the weight stays within the aircraft’s CG envelope as you taxi or prepare for takeoff. For the CRJ‑550, the maximum allowed difference between the left and right tank quantities during ground operations is 2,500 pounds. This provides tolerance for normal fueling and fuel burn while preventing a large, potentially problematic lateral CG shift. If the difference grows beyond this limit, you’d balance the tanks (or use crossfeed) before taxi or takeoff. Smaller or larger numbers would either unduly constrain operations or risk exceeding CG limits, respectively.