Definition
The published numerical data describing how an aircraft will perform under specified conditions, including takeoff and landing distances, climb rates, cruise speeds, fuel consumption, service ceiling, and weight and balance limits. These figures are produced by the manufacturer through flight testing and appear in the Pilot's Operating Handbook (POH) or Aircraft Flight Manual (AFM).
Plain English
The numbers that tell you what your aircraft can and cannot do — how far it needs to take off, how fast it climbs, how much fuel it burns, how high it can fly, and how heavy it can be loaded.
Context Anchor
Seen in flight planning, aircraft manuals, instructor demonstrations, and discussions about whether an aircraft can safely take off, climb, cruise, or land under current conditions.
Derivation
Performance comes from an older sense meaning to carry out or accomplish. Figure can mean a number. Together, the phrase points to numbers showing what the aircraft can actually accomplish.
Why Pilots Care
These figures determine whether a planned flight can be completed safely given runway length, aircraft weight, temperature, and altitude.
Intuition Check
Here, performance does not mean pilot skill, and figures does not mean pictures or rough guesses. It means the aircraft's capability expressed as numbers for the conditions being considered.
Example Sentence 1
Before departing the high-elevation airport on a hot afternoon, the instructor walked the student through the aircraft performance figures to confirm the runway was long enough.
Example Sentence 2
High temperature and a heavy load required the pilot to recalculate the aircraft performance figures before departure.