Definition
The angle, measured in degrees below the horizontal, at which an airplane descends toward a point on the ground, typically the runway touchdown point during the final approach segment of a traffic pattern.
Plain English
How steeply the airplane is heading down toward the runway, measured as an angle below level flight.
Context Anchor
Seen when flying the traffic pattern, especially on base leg and final approach while judging whether the airplane is too high, too low, too steep, or too shallow for landing.
Derivation
“Descent” comes from a Latin root meaning “to climb down.” “Angle” refers to the amount of turn between two lines. Together, the words point to the steepness of the airplane’s downward path.
Why Pilots Care
Controls how quickly altitude is lost and directly affects landing distance, airspeed management, and the ability to reach the runway safely.
Grounding Statement
On final approach, the descent angle is the slant of the airplane’s path down toward the runway.
Intuition Check
Descent angle is not the same as descent rate. Descent angle is the steepness of the path; descent rate is how fast the airplane is losing altitude.
Example Sentence 1
On final approach, the pilot adjusted power to maintain a steady three-degree descent angle to the runway.
Example Sentence 2
A shallower descent angle on final helps maintain airspeed and gives more time to adjust for the runway.