Weight and balance computations for small multiengine airplanes are similar to those discussed for single-engine airplanes. See Figure 6-1 for an example of weight and balance data for a typical light twin-engine airplane.

The airplane in this example was weighed to determine its basic empty weight (BEW) and empty weight center of gravity (EWCG). The weighing conditions and results are shown below for weight with fuel drained and oil full:

First, add the weights indicated by the individual scales and then subtract the tare weights to determine the BEW. Next, using the BEW and EWCG, the loaded weight and CG of the aircraft can be determined with data from Figure 6-2, using a chart such as the one in Figure 6-3.

The aircraft is loaded as shown:

Make a chart showing the weight, arm, and moments of the airplane and its load.

The loaded weight for this flight is 5,064 pounds, and the CG is located at 42.47 inches aft of the datum.

To determine that the weight and CG are within the allowable range, refer to the CG range chart in Figure 6-4. Draw a line vertically upward from 42.47 inches from the datum and one horizontally from 5,064 pounds. These lines cross inside the envelope, showing that the airplane is properly loaded.

Refer again to Figures 6-2 and 6-3.