SAMPLE PROBLEM 3
The loading chart used in the sample problems 1 and 2 is designed to graphically calculate the loaded center of gravity and show whether it is within limits, all on a single chart. Another type of loading chart calculates moments for each station. You must then add up these moments and consult another graph to determine whether the total is within limits. Although this method has more steps, the charts are sometimes easier to use.
To begin, record the basic empty weight of the helicopter, along with its total moment. Remember to use the actual weight and moment of the helicopter you are flying. Next, record the weights of the pilot, passengers, fuel, and baggage on a weight and balance worksheet. Then, determine the total weight of the helicopter. Once you have determined the weight to be within prescribed limits, compute the moment for each weight and for the loaded helicopter. Do this with a loading graph provided by the manufacturer. Use figure 7-7 to determine the moments for a pilot and passenger weighing 340 pounds and for 211 pounds of fuel. 

36
32
 

@STA. 83.2.” Go left and read the pilot/passenger moment (28.3 thousand lb.-inches).
Reduction factors are often used to reduce the size of large numbers to manageable levels. In figure 7-7, the scale on the loading graph gives you moments in thousands of pound-inches. In most cases, when using this type of chart, you need not be concerned with reduction factors because the CG/moment envelope chart normally uses the same reduction factor. [Figure 7-8]
 

MOMENT (THOUSANDS OF LBS. IN.)
28 24 20 16 12
 

     
  5   3.2