What is the difference between magnetic variation and compass deviation?
Answer
Magnetic variation is the angular difference between true north and magnetic north, shown on sectional charts as isogonic lines. Deviation is the error caused by the aircraft's own magnetic fields, shown on the compass correction card.
PHAK Ch. 16 — Navigation
Test yourself on this and 500+ more
Squawk Box is a free aviation micro-learning app. Flip cards, build streaks, stay sharp.
Try Squawk Box