C-CAT Navigation

Question 1

What is the 1/60 rule?

Answer 1

For every 60nm, 1 degree off track will result in a 1nm deviation off track at the 60nm mark.

Question 2

How to calculate the Track Error using 1/60 rule?

Answer 2

(Distance off TRK/Distance gone on FPT)x60

Question 3

How to calculate the Closing Angle using the 1/60 rule?

Answer 3

(Distance off TRK/Distance to go on FPT) x 60

Question 4

how many ft in 1 nm

Answer 4

6076ft

Question 5

What is the conversion between US GAL & Litre

Answer 5

1 liquid gallon is = 3.78 Litre

Question 6

What is magnetic dip?

Answer 6

Lines of magnetic flux dip down towards the earth near the poles.

Therefore compass card is suspended on a pivot point above the magnets

Question 7

What causes turning error of the compass?

Answer 7

The magnet stays aligned with the airplane as it turns, resulting in an angle to the horizon. ONUS must be followed when turning to compensate.

Question 8

What causes acceleration error of the compass?

Answer 8

As compass sits at a slight angle, the COG is not directly in line with the pivot point - this allows the COG to lag behind when the aircraft accelerates.

SAND to remember.