compass deviation

Question 1

compass deviation

Answer 1

difference between magnetic north and compass north

caused by aircrafts magnetic field

Question 2

components of aircrafts magnetic field

Answer 2

soft (temporary) component-easy to magnetise
hard(permanent) component- more difficult to magnetise
electromagnetism from onboard components/ electrics

Question 3

deviation is worse..

Answer 3

at the pole, lines stronger

at high altitude

Question 4

deviation east

Answer 4

compass least

Question 5

deviation west

Answer 5

compass best

Question 6

requirements for compass swing

Answer 6

change in base(large change in lat)
major change in aircraft equipment
lightning strike
aircraft parked in the same direction for long period of time
when new compass is fitted
any time compass or recorded deviation is suspect
when specified in the aircraft maintenance schedule

Question 7

compass swing

Answer 7

way of minimising compass deviation
small magnets in case adjusted to make more accurate. still has residual deviation after that
deviation card showing residual deviation completed by doing compass swing
residual deviation- deviation left/ it still has

Question 8

CDMVT- Cadbury dairy milk very tasty

Answer 8

compass deviation magnetic variation true