In calculating empty weight, which statement describes the method?

In calculating empty weight, which statement describes the method?

• A. Subtract tare weight from the scale reading and add the weight of each weighing point.
• B. Add tare weight to the scale reading and subtract the weights at weighing points.
• C. Multiply the distance to datum by the sum of scale readings.
• D. Add the net weight of each weighing point and subtract the tare weight.

Answer: (A)

When calculating empty weight, you remove the platform’s influence on every scale and then combine what’s left. Each weighing point has a tare value, which is the weight of the scale platform itself. For each scale reading, subtract that tare to get the actual weight the aircraft contributes to that scale. Then add all those net weights together to obtain the empty weight. For example, if one scale reads 1000 with a tare of 60, that scale contributes 940 to the total; another reads 1200 with a tare of 100, contributing 1100. The sum of 940 and 1100 gives the empty weight. This avoids inflating the result by counting the tare more than once or applying tare in the wrong way, and it’s not about moments or distance calculations, which would address balance rather than total weight.

When calculating empty weight, you remove the platform’s influence on every scale and then combine what’s left. Each weighing point has a tare value, which is the weight of the scale platform itself. For each scale reading, subtract that tare to get the actual weight the aircraft contributes to that scale. Then add all those net weights together to obtain the empty weight.

For example, if one scale reads 1000 with a tare of 60, that scale contributes 940 to the total; another reads 1200 with a tare of 100, contributing 1100. The sum of 940 and 1100 gives the empty weight.

This avoids inflating the result by counting the tare more than once or applying tare in the wrong way, and it’s not about moments or distance calculations, which would address balance rather than total weight.