Definition
A weight and balance computation aid, supplied by the aircraft manufacturer in the Pilot's Operating Handbook, that converts the weight of each load item (fuel, occupants, baggage) into a load moment by reading across diagonal lines plotted on a chart. The pilot reads weight on one axis, follows the diagonal line for that load station, and reads the corresponding moment on the other axis, then sums all moments to check that the total falls within allowable limits.
Plain English
A chart in the aircraft handbook that lets you turn each item of weight you load into a number called a moment, just by reading across lines. Adding up all the moments shows whether the aircraft is safely loaded.
Context Anchor
Seen in weight-and-balance work, especially when using the graph method in an airplane handbook or FAA training example.
Why Pilots Care
Confirms the aircraft is loaded safely so it remains stable, controllable, and performs within certified limits.
Analogy
It is like using a checkout chart that shows not just how much each item weighs, but where that weight affects the airplane’s balance.
Intuition Check
Do not think of a loading graph as a picture of where to physically place cargo. In this context, it is a calculation chart for checking aircraft weight and balance.
Example Sentence 1
Before the cross-country flight, the pilot used the loading graph in the POH to find the moment for full fuel, two adults, and 40 pounds of baggage.
Example Sentence 2
After adding baggage, she rechecked the loading graph and found the airplane still within safe limits.