19 Introduction To Charts

Question 1

What is the Prime Meridian also known as?

Answer 1

Greenwich Meridian

Question 2

What is a collection of parallels of latitude and meridians known as?

Answer 2

Graticule

Question 3

What kind of ‘projection’ do the following charts use:

• Polar Stereographic
• Lambert’s Conformal
• Direct Mercator

Answer 3

• Polar Stereographic chart: Plain Projection
• Lambert’s Conformal: Cone Projection
• Direct Mercator: Cylinder Projection

Question 4

What properties must a chart have to be called Orthomorphic?

Answer 4

• Scale has the same relationship in all directions
• Graticules at right angles
• Aka Conformality

Question 5

What is a Grid Mora?

Answer 5

An indication on the chart which displays the minimum safe altitude for a gird square

Question 6

What is represented on an ICAO chart (symbol) by a line with ‘teeth’ above and below it?

Answer 6

Flight Information Region (FIR)

Question 7

What is represented on an ICAO chart (symbol) by a solid line?

Answer 7

Aerodrome Traffic Zone (ATZ)

Question 8

What is represented on an ICAO chart (symbol) by a small dotted line?

Answer 8

Control Zone (CTZ)

Question 9

What is represented on an ICAO chart (symbol) by a line broken with dots and dashes?

Answer 9

Uncontrolled Route

Question 10

What is represented on an ICAO chart (symbol) by a large dotted line?

Answer 10

Advisory Airspace (ADA)