Two methods used in descent planning are demonstrated.

The first method is extremely simple and shows when to start the descent based on time.

Method 2 shows when to start the descent based on distance and what rate of descent is required.

VNAV makes descent planning easy, but for jets like the FlySimWare Lear 35, there is no FMS, and no VNAV. Descent planning is easy without VNAV, and after watching this video, you will be able to plan a descent without the aid of VNAV.

One thing to consider when descending is true airspeed (TAS). TAS will drop significantly from cruise altitude to altitudes below 10,000 feet (in a jet). Will descent rate stay the same during the descent or will it change? A combination of methods 1 and 2 will make descent planning easy.

The simple math for both methods are shown at the end of the video.

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