What are the maximum aircraft gross weights for MB-2 on level ground and on grades up to 2.0%?

• A. 550,000 pounds; 500,000 pounds; 2.5%
• B. 600,000 pounds; 450,000 pounds; 3.0%
• C. 500,000 pounds, 450,000 pounds, 2.0%
• D. 500,000 pounds; 400,000 pounds; 1.8%

Answer: (C)

When moving an aircraft, the allowed gross weight changes with the slope because gravity adds load when you’re on a grade, affecting braking, steerage, and tow equipment limits. On level ground, the system can handle more weight, so the maximum is 500,000 pounds. On grades up to 2.0%, that extra gravitational force means you must reduce the weight to maintain safe control and braking, giving a maximum of 450,000 pounds. The 2.0% grade is the threshold for that reduced limit, so options proposing higher level-ground weights or higher grade allowances don’t fit. The correct values are 500,000 pounds on level ground and 450,000 pounds on grades up to 2.0%.