W&B 5-6

3,200 3,100 3,000 2,950 2,900 2,800 2,700 2,600 2,500 2,400 2,300 2,200 2,100 2,000 1,900 1,800 1,450 1,400 1,350 1,300 1,250 1,200 1,150 1,100 1,050 1,000 950 900 850 55 65 75 85 95 105 115 125 135 145 650 850 1,050 1,250 1,450 1,650 750 950 1,150 1,350 1,550 Loaded aircraft moment/1,000 (lb-in) Loaded aircraft weight (lb) Loaded aircraft weight (kg) Loaded aircraft moment/1,000 (kg-mm) Center of gravity Moment envelope Takeoff and landing Takeoff only If takeoff weight is more than landing weight of 2,950 pounds, allow flight time for fuel burn-off to 2,950 pounds before landing. Figure 5-8. CG moment envelope. Referring to Figure 5-8, draw a line vertically upward from 131.8 on the horizontal index at the bottom of the chart and a horizontal line from 3,027 pounds in the left-vertical index. These lines intersect within the dashed area, which shows that the aircraft is loaded properly for takeoff, but it is too heavy for landing (similar to the previous example). Because of this, if the aircraft had to return for landing immediately after takeoff, it would need to fly long enough to burn 77 pounds (slightly less than 13 gallons) of fuel to reduce its weight for landing.