Takeoff with fuel load in center tank exceeding how many pounds is not permitted unless each wing tank is above 4,400 pounds?

• A. 400 pounds
• B. 500 pounds
• C. 600 pounds
• D. 700 pounds

Answer: (B)

Weight and balance is about where the airplane’s mass sits, because fuel in different tanks moves the center of gravity (CG). The takeoff rule you’re looking at sets a specific limit to protect controllability and performance: if the center tank holds more than 500 pounds of fuel, you must have at least 4,400 pounds of fuel in each wing tank before takeoff. This arrangement keeps the CG within safe boundaries during the critical takeoff and initial climb, even as fuel is burned and weight shifts.

Why 500 pounds? When the center tank is heavier, it shifts mass toward the center. If wing tanks aren’t carrying enough fuel to offset that shift, the CG can move toward limits that affect stability and controllability. Requiring substantial wing-fuel in that case ensures the CG remains within the approved envelope, preserving safe handling and performance.