Definition
The coordinated set of control and power changes used to transition the aircraft from level flight into a stabilized descent at a planned airspeed and rate of descent. A standard instrument descent entry involves reducing power to a predetermined setting, allowing the airspeed to decrease (if a constant-airspeed descent is desired) or pitching down to establish the target descent rate, and trimming to relieve control pressures.
Plain English
The way you start a descent — the sequence of small changes you make to power, pitch, and trim that takes the airplane smoothly from level flight into a steady descent.
Context Anchor
Used in instrument flying when practicing straight descents or beginning an assigned descent while flying by the instruments.
Derivation
Descent comes from a Latin word meaning “to climb down.” Entry means “going into” something. Together, descent entry means going into the downward part of the flight in a controlled way, not just ending up there.
Why Pilots Care
A smooth descent entry prevents airspeed overshoots, maintains positive control, and reduces workload during altitude changes in instrument conditions.
Grounding Statement
The key idea is a smooth, deliberate change from level flight into a controlled downward path.
Intuition Check
Do not think of a descent entry as simply letting the airplane sink. It is an intentional setup for the descent, with power, nose position, heading, and instruments all checked.
Example Sentence 1
After ATC cleared him to 6,000 feet, he began the descent entry by reducing power, lowering the nose slightly, and trimming for 500 feet per minute.
Example Sentence 2
After completing the descent entry, the aircraft stabilizes at 500 feet per minute while holding 90 knots and the assigned heading.