Definition
A property of certain heading instruments, particularly the flux gate compass and some gyro systems, that automatically detects and aligns with magnetic north using the Earth's magnetic field. A north-seeking instrument senses the horizontal component of the magnetic field and continuously orients itself, or feeds a heading reference, toward magnetic north without requiring manual setting by the pilot.
Plain English
The instrument finds magnetic north on its own. The pilot doesn't have to set it — it senses the Earth's magnetic field and lines up with north automatically.
Context Anchor
Seen in magnetic compass and heading indicator discussions, especially when explaining how an aircraft senses direction.
Why Pilots Care
It supplies the reference that keeps heading information accurate and prevents dangerous navigation errors during instrument flight.
Analogy
A north-seeking magnet is like a weather vane, but instead of turning with the wind, it turns with Earth’s magnetic field.
Intuition Check
North seeking does not mean the instrument is choosing a route north. It means the movable magnetic part naturally lines up with Earth’s magnetic field and indicates magnetic north.
Example Sentence 1
The flux gate in a slaved gyro system is north-seeking, so it keeps the heading indicator aligned with magnetic north without pilot input.
Example Sentence 2
The flux valve supplies the north seeking signal that slaves the heading indicator to the correct magnetic heading.