Definition
A method of controlling the airplane in which the pilot's primary attention is on the airplane's actual flight path through the air -- where the airplane is going -- rather than on its pitch attitude relative to the horizon. Pitch and power are then adjusted as needed to make the flight path match the desired path.
Plain English
Flying by watching where the airplane is actually going, and adjusting the controls to keep it heading where you want, rather than flying by the nose position alone.
Context Anchor
Used during approach, landing, and energy management when the pilot is checking whether the airplane’s path matches the intended path.
Derivation
"Reference" comes from the Latin referre, meaning "to carry back to" -- the thing you keep checking against. So a flight path reference is the cue the pilot keeps coming back to: the actual path of the airplane through the air.
Why Pilots Care
Using the correct flight path reference prevents energy mismanagement by keeping the aircraft on a stable glide or climb path and avoiding unstable approaches.
Grounding Statement
On final approach, a point on the runway that stays steady in the windshield can serve as the pilot’s flight path reference.
Intuition Check
Do not read “reference” as a casual suggestion. In this context, it means the specific cue the pilot is using to judge and control the airplane’s actual path.
Example Sentence 1
On short final, the instructor told the student to switch to a flight path reference and aim the airplane at the touchdown point rather than chasing a fixed pitch attitude.
Example Sentence 2
During climb-out the student kept the distant tree line as the flight path reference to maintain the proper climb angle.