Definition
The planned vertical path an airplane follows from cruise altitude down to a target altitude or the runway, defined by a chosen rate of descent, airspeed, and ground distance so the airplane arrives at the right altitude at the right point.
Plain English
The shape of your way down. It's the plan for how steeply and how fast you'll come down so you reach a chosen altitude exactly when you want to be there, not too high and not too low.
Context Anchor
Used when planning and flying descents, descending turns, arrivals, and approaches so the airplane reaches the right height at the right place.
Derivation
Profile here means the side-on shape of the path through the air, the way you'd see it drawn on paper looking from the side. A descent profile is the side-view picture of the airplane's path as it comes down.
Why Pilots Care
Following a proper descent profile keeps the aircraft at safe speeds, avoids excessive fuel burn or drag, and ensures arrival at the correct altitude for the approach or landing.
Grounding Statement
Picture the airplane’s path from the side: a descent profile is the planned downward line from where the descent starts to where it should end.
Intuition Check
Do not read profile as a pilot’s personal description or record. Here, profile means the planned shape of the descent over time or distance.
Example Sentence 1
She started down 90 miles from the airport to fly a 3-degree descent profile straight to the final approach fix.
Example Sentence 2
By following the descent profile from cruise, the aircraft arrived in the traffic pattern at the proper speed with minimal adjustments needed.