Definition
The structured mental and procedural preparation a pilot completes before beginning the transition from cruise flight to the destination airport, covering review of the expected arrival route, descent point, altitudes, speeds, weather, approach procedure to be flown, frequencies, navigation aids, missed approach plan, and aircraft configuration changes. It is performed early enough that the pilot is not rushed when clearances and altitude changes begin.
Plain English
Thinking through and setting up everything needed for coming down from cruise and flying the approach into the destination, well before it actually starts. The pilot reviews the route down, the approach to be flown, the weather, the radio frequencies, and the missed approach plan, so nothing has to be figured out under pressure.
Context Anchor
Encountered during instrument en route flying, before arrival, when the pilot is preparing to leave cruise altitude and set up for the approach to the destination airport.
Derivation
Descent comes from a word meaning “to climb down.” Approach comes from a word meaning “to come nearer.” Together, the phrase points to both parts of the job: getting lower and getting properly lined up with what comes next near the airport.
Why Pilots Care
Proper planning prevents rushed or unstable approaches, ensures terrain and traffic clearance, reduces pilot workload during the critical arrival phase, and supports compliance with ATC clearances and published procedures.
Grounding Statement
The key idea is to be ahead of the airplane: know when to start down, what altitude you need next, and what you will do when you get there.
Intuition Check
Do not think of this as only “starting down.” In instrument flying, planning the descent and approach means preparing the whole arrival path before the airplane gets close to the airport.
Example Sentence 1
About 100 miles from the destination, she began planning the descent and approach, pulling out the approach chart and reviewing the expected arrival, minimums, and missed approach procedure.
Example Sentence 2
By planning the descent and approach early, the crew avoided a high-speed arrival that would have required last-minute maneuvering inside the terminal area.