Navigation Basic Principles

Question 1

Describe aircraft heading?

Answer 1

Direction of the Aircraft’s LFD relative to North. Measured clockwise from North and a positive three-figure number.

Question 2

Describe aircraft track?

Answer 2

The path of an aircraft over the ground.

Question 3

Describe aircraft drift?

Answer 3

The angle between the aircraft heading and track. Measured in degrees to port or starboard of the aircraft’s heading.

Question 4

Explain secant correction.

Answer 4

Used when an aircraft travels East or West at latitudes other than the Equator.
1
——
Cos(latitude)

Question 5

Identify the aircraft heading, track and drift angle shown on a Horizontal Situation.

Answer 5

Heading = 310º
Track = 290º
Drift = 20º Port