Page 855 - PPL-engelsk 2025

Navigation

9.8 The navigation computer CRP1W and CRP1

Now we have come to the point where we need to calculate the flight time. For

this purpose, you need a flight computer – a navigation computer.

With it, you can quickly calculate, for example, the influence of the wind, the

time the flight will take, fuel consumption, etc.

Below you will first find an introduction to the computer. Then there are

explanations of the computer's most used functions. Finally, a few exercises with

the most common functions have been completed.

We will use both sides of the computer. The computer has a slider. It is used

together with the wind side (page 2).

9.8.1 The scale side

Here we will first look at the scale side (page 1). This side is used without the use

of a slider.

The side has:

- A fixed scale - the distance

scale

- A rotatable scale - the

time scale (in minutes).

The 60-minute mark on

the time scale is called the

speed index (or the hour

mark).

Flyveteori PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 855