Archives: flyingtheory

Primary Surveillance Radar – Emits pulse and uses echo to calculate position

Secondary Surveillance Radar – Emits interrogation pulse and calculates position based on a response pulse emitted by target aircraft.

Mode A – Transponder Setting – Response pulse contains position information

Mode C – Transponder Setting – Response pulse contains position and altitude information

6.72.2 State the two types of radar currently used in New Zealand

6.72.4 Describe the method of operation of each type of radar

6.72.6 Explain what is meant by transponder Mode A and Mode C.

•  1nm off track after 60nm is a 1° error in heading

6.36 The 1 in 60 rule
6.36.2 1:60 rule computations

• Earth is divided into a grid of vertical parallels(lines) of longitude and horizontal meridians(lines) of latitude.
• The meridian of longitude which is defined as 0 degrees is known as the Prime Meridian which is located in Greenwich England.
• The line of latitude which is defined as 0 degrees is known as the Equator.

6.2.4 Define and identify, on a diagram of the earth:
(a) axis and direction of rotation;
(b) geographic and magnetic poles;
(c) the equator;
(d) parallels of latitude;
(e) meridians of longitude;
(f) Greenwich (Prime) Meridian;
(g) latitude/longitude.

• Earth is divided into a grid of vertical parallels(lines) of longitude and horizontal meridians(lines) of latitude.
• The meridians of longitude are measured in degrees up to 180 starting at the prime meridian.
• The parallels of latitude are measured in degrees up to 90 starting at the equator.

6.2.4 Define and identify, on a diagram of the earth:
(a) axis and direction of rotation;
(b) geographic and magnetic poles;
(c) the equator;
(d) parallels of latitude;
(e) meridians of longitude;
(f) Greenwich (Prime) Meridian;
(g) latitude/longitude.