24 Map Reading

This map-reading briefing is an introduction to basic navigation techniques and the elementary navigation exercises.  

Commonly this exercise is carried out within the training area, and certainly within 25 miles of the departure aerodrome.  

Introduction

Map-reading is a basic skill of navigation, so there is a need to be able to read and use aeronautical charts before moving on to true navigation.

Objective

To read, prepare and use aeronautical charts as an aid to navigation

 By the end of this lesson, the student will be able to:

• Identify and interpret key features on a topographical map.
• Use line features to navigate and cross-reference aircraft position.
• Understand and apply the concepts of fixes and dead reckoning.
• Prepare the chart for flight in the cockpit.

Considerations

Topographic Features

The components of topographic maps are discussed. A suitable chart is selected, the 1:500,000 series. 

Topographic maps use various symbols and features to represent the physical and cultural landscape.

Contours and layer tinting 

• Note how contours and layer tinting are used to show terrain heights above sea level.
  • Contours are lines on a map that connect points of equal elevation. They are used to represent the shape and steepness of the terrain.
  • Layer tinting is the shading used between contour lines to indicate the slope of the land.