Definition
A chart published by the aircraft manufacturer that shows how the airplane will perform under specified conditions, such as takeoff distance, climb rate, cruise fuel burn, or landing distance. The pilot enters the graph with known values (weight, pressure altitude, temperature, wind) and reads off the predicted performance figure.
Plain English
A picture-style table from the aircraft manual that lets you look up how the airplane will perform on a given day, based on weight, altitude, temperature, and wind.
Context Anchor
Seen in aircraft flight manuals, pilot operating handbooks, and FAA performance discussions when planning takeoff, landing, climb, fuel, or distance needs.
Derivation
“Performance” means how well something carries out a task. “Graph” comes from a Greek word meaning “to write” or “to draw.” Together, the term means a drawn tool that shows what the airplane is expected to do.
Why Pilots Care
Determines whether the airplane can operate safely from the intended airport under current conditions and prevents attempts that would result in insufficient runway or climb performance.
Intuition Check
A performance graph is not a guarantee of what will happen. It is an estimate based on the listed conditions and assumptions, so the pilot must use the correct inputs and leave a safe margin.
Example Sentence 1
Before departure, she used the takeoff performance graph to confirm the runway was long enough at the field's pressure altitude and temperature.
Example Sentence 2
Using the performance graph, the instructor showed how an increase in weight lengthened the required takeoff distance.