Magnetic Compass Deviations

Question 1

What are the acronyms for magnetic compass deviation

Answer 1

DAVE
UNOS
ANDS

Question 2

DAVE

Answer 2

Deviation Aircraft
deviation due to wires metal etc
use compass deviation card to correct
Variation Earth
variation from the earth

Question 3

UNOS

Answer 3

Undershoot North
undershoot north by 30 degrees
Overshoot South
overshoot south by 30 degrees

Question 4

ANDS

Answer 4

Accelerate North
on east or west heading when accelerating compass will dip north
Decelerate South
on east or west heading when decelerating compass will dip south